From 1187f9b3f6ebde806289877fa710ffd58f950104 Mon Sep 17 00:00:00 2001 From: Hendrik Hamerlinck Date: Wed, 17 Sep 2025 08:59:07 +0200 Subject: [PATCH 01/15] riscv: dts: spacemit: add UART pinctrl combinations Add UART pinctrl configurations based on the SoC datasheet and the downstream Bianbu Linux tree. The drive strength values were taken from the downstream implementation, which uses medium drive strength. CTS/RTS are moved to separate *-cts-rts-cfg states so boards can enable hardware flow control conditionally. Signed-off-by: Hendrik Hamerlinck Reviewed-by: Yixun Lan Reviewed-by: Troy Mitchell Link: https://lore.kernel.org/r/20250917065907.160615-1-hendrik.hamerlinck@hammernet.be Signed-off-by: Yixun Lan --- arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi | 430 ++++++++++++++++++- 1 file changed, 428 insertions(+), 2 deletions(-) diff --git a/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi index aff19c86d5ff..ce7b899d4dd9 100644 --- a/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi +++ b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi @@ -59,11 +59,437 @@ gmac1-pins { }; }; + /omit-if-no-ref/ + uart0_0_cfg: uart0-0-cfg { + uart0-0-pins { + pinmux = , /* uart0_txd */ + ; /* uart0_rxd */ + power-source = <3300>; + bias-pull-up = <0>; + drive-strength = <19>; + }; + }; + + /omit-if-no-ref/ + uart0_1_cfg: uart0-1-cfg { + uart0-1-pins { + pinmux = , /* uart0_txd */ + ; /* uart0_rxd */ + power-source = <3300>; + bias-pull-up = <0>; + drive-strength = <19>; + }; + }; + + /omit-if-no-ref/ uart0_2_cfg: uart0-2-cfg { uart0-2-pins { - pinmux = , - ; + pinmux = , /* uart0_txd */ + ; /* uart0_rxd */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + /omit-if-no-ref/ + uart2_0_cfg: uart2-0-cfg { + uart2-0-pins { + pinmux = , /* uart2_txd */ + ; /* uart2_rxd */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart2_0_cts_rts_cfg: uart2-0-cts-rts-cfg { + uart2-0-pins { + pinmux = , /* uart2_cts */ + ; /* uart2_rts */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart3_0_cfg: uart3-0-cfg { + uart3-0-pins { + pinmux = , /* uart3_txd */ + ; /* uart3_rxd */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart3_0_cts_rts_cfg: uart3-0-cts-rts-cfg { + uart3-0-pins { + pinmux = , /* uart3_cts */ + ; /* uart3_rts */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart3_1_cfg: uart3-1-cfg { + uart3-1-pins { + pinmux = , /* uart3_txd */ + ; /* uart3_rxd */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart3_1_cts_rts_cfg: uart3-1-cts-rts-cfg { + uart3-1-pins { + pinmux = , /* uart3_cts */ + ; /* uart3_rts */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart3_2_cfg: uart3-2-cfg { + uart3-2-pins { + pinmux = , /* uart3_txd */ + ; /* uart3_rxd */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart3_2_cts_rts_cfg: uart3-2-cts-rts-cfg { + uart3-2-pins { + pinmux = , /* uart3_cts */ + ; /* uart3_rts */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart4_0_cfg: uart4-0-cfg { + uart4-0-pins { + pinmux = , /* uart4_txd */ + ; /* uart4_rxd */ + power-source = <3300>; + bias-pull-up = <0>; + drive-strength = <19>; + }; + }; + + /omit-if-no-ref/ + uart4_1_cfg: uart4-1-cfg { + uart4-1-pins { + pinmux = , /* uart4_txd */ + ; /* uart4_rxd */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart4_1_cts_rts_cfg: uart4-1-cts-rts-cfg { + uart4-1-pins { + pinmux = , /* uart4_cts */ + ; /* uart4_rts */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart4_2_cfg: uart4-2-cfg { + uart4-2-pins { + pinmux = , /* uart4_txd */ + ; /* uart4_rxd */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart4_3_cfg: uart4-3-cfg { + uart4-3-pins { + pinmux = , /* uart4_txd */ + ; /* uart4_rxd */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart4_3_cts_rts_cfg: uart4-3-cts-rts-cfg { + uart4-3-pins { + pinmux = , /* uart4_cts */ + ; /* uart4_rts */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart4_4_cfg: uart4-4-cfg { + uart4-4-pins { + pinmux = , /* uart4_txd */ + ; /* uart4_rxd */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart4_4_cts_rts_cfg: uart4-4-cts-rts-cfg { + uart4-4-pins { + pinmux = , /* uart4_cts */ + ; /* uart4_rts */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart5_0_cfg: uart5-0-cfg { + uart5-0-pins { + pinmux = , /* uart5_txd */ + ; /* uart5_rxd */ + power-source = <3300>; + bias-pull-up = <0>; + drive-strength = <19>; + }; + }; + + /omit-if-no-ref/ + uart5_1_cfg: uart5-1-cfg { + uart5-1-pins { + pinmux = , /* uart5_txd */ + ; /* uart5_rxd */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart5_1_cts_rts_cfg: uart5-1-cts-rts-cfg { + uart5-1-pins { + pinmux = , /* uart5_cts */ + ; /* uart5_rts */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart5_2_cfg: uart5-2-cfg { + uart5-2-pins { + pinmux = , /* uart5_txd */ + ; /* uart5_rxd */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart5_2_cts_rts_cfg: uart5-2-cts-rts-cfg { + uart5-2-pins { + pinmux = , /* uart5_cts */ + ; /* uart5_rts */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart5_3_cfg: uart5-3-cfg { + uart5-3-pins { + pinmux = , /* uart5_txd */ + ; /* uart5_rxd */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart5_3_cts_rts_cfg: uart5-3-cts-rts-cfg { + uart5-3-pins { + pinmux = , /* uart5_cts */ + ; /* uart5_rts */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart6_0_cfg: uart6-0-cfg { + uart6-0-pins { + pinmux = , /* uart6_txd */ + ; /* uart6_rxd */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart6_0_cts_rts_cfg: uart6-0-cts-rts-cfg { + uart6-0-pins { + pinmux = , /* uart6_cts */ + ; /* uart6_rts */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart6_1_cfg: uart6-1-cfg { + uart6-1-pins { + pinmux = , /* uart6_txd */ + ; /* uart6_rxd */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart6_1_cts_rts_cfg: uart6-1-cts-rts-cfg { + uart6-1-pins { + pinmux = , /* uart6_cts */ + ; /* uart6_rts */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart6_2_cfg: uart6-2-cfg { + uart6-2-pins { + pinmux = , /* uart6_txd */ + ; /* uart6_rxd */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart7_0_cfg: uart7-0-cfg { + uart7-0-pins { + pinmux = , /* uart7_txd */ + ; /* uart7_rxd */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart7_1_cfg: uart7-1-cfg { + uart7-1-pins { + pinmux = , /* uart7_txd */ + ; /* uart7_rxd */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart7_1_cts_rts_cfg: uart7-1-cts-rts-cfg { + uart7-1-pins { + pinmux = , /* uart7_cts */ + ; /* uart7_rts */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart8_0_cfg: uart8-0-cfg { + uart8-0-pins { + pinmux = , /* uart8_txd */ + ; /* uart8_rxd */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart8_1_cfg: uart8-1-cfg { + uart8-1-pins { + pinmux = , /* uart8_txd */ + ; /* uart8_rxd */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart8_1_cts_rts_cfg: uart8-1-cts-rts-cfg { + uart8-1-pins { + pinmux = , /* uart8_cts */ + ; /* uart8_rts */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart8_2_cfg: uart8-2-cfg { + uart8-2-pins { + pinmux = , /* uart8_txd */ + ; /* uart8_rxd */ + power-source = <3300>; + bias-pull-up = <0>; + drive-strength = <19>; + }; + }; + + /omit-if-no-ref/ + uart8_2_cts_rts_cfg: uart8-2-cts-rts-cfg { + uart8-2-pins { + pinmux = , /* uart8_cts */ + ; /* uart8_rts */ + power-source = <3300>; + bias-pull-up = <0>; + drive-strength = <19>; + }; + }; + + /omit-if-no-ref/ + uart9_0_cfg: uart9-0-cfg { + uart9-0-pins { + pinmux = , /* uart9_txd */ + ; /* uart9_rxd */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart9_1_cfg: uart9-1-cfg { + uart9-1-pins { + pinmux = , /* uart9_txd */ + ; /* uart9_rxd */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart9_1_cts_rts_cfg: uart9-1-cts-rts-cfg { + uart9-1-pins { + pinmux = , /* uart9_cts */ + ; /* uart9_rts */ + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + + /omit-if-no-ref/ + uart9_2_cfg: uart9-2-cfg { + uart9-2-pins { + pinmux = , /* uart9_txd */ + ; /* uart9_rxd */ bias-pull-up = <0>; drive-strength = <32>; }; From 3e8d7309e6260b1d066e733bf3e2e1b6a0d3f82b Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Mon, 25 Aug 2025 12:20:54 -0500 Subject: [PATCH 02/15] riscv: dts: spacemit: enable the i2c8 adapter Define properties for the I2C adapter that provides access to the SpacemiT P1 PMIC. Enable this adapter on the Banana Pi BPI-F3. Signed-off-by: Alex Elder Link: https://lore.kernel.org/r/20250825172057.163883-6-elder@riscstar.com Signed-off-by: Yixun Lan --- arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts | 12 ++++++++++++ arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi | 7 +++++++ arch/riscv/boot/dts/spacemit/k1.dtsi | 13 +++++++++++++ 3 files changed, 32 insertions(+) diff --git a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts index 2aaaff77831e..b33ac47fc6bd 100644 --- a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts +++ b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts @@ -92,6 +92,18 @@ &pdma { status = "okay"; }; +&i2c8 { + pinctrl-0 = <&i2c8_cfg>; + pinctrl-names = "default"; + status = "okay"; + + pmic@41 { + compatible = "spacemit,p1"; + reg = <0x41>; + interrupts = <64>; + }; +}; + &uart0 { pinctrl-names = "default"; pinctrl-0 = <&uart0_2_cfg>; diff --git a/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi index ce7b899d4dd9..b71a65ca66fc 100644 --- a/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi +++ b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi @@ -59,6 +59,13 @@ gmac1-pins { }; }; + i2c8_cfg: i2c8-cfg { + i2c8-0-pins { + pinmux = , /* PWR_SCL */ + ; /* PWR_SDA */ + }; + }; + /omit-if-no-ref/ uart0_0_cfg: uart0-0-cfg { uart0-0-pins { diff --git a/arch/riscv/boot/dts/spacemit/k1.dtsi b/arch/riscv/boot/dts/spacemit/k1.dtsi index 6cdcd80a7c83..3de35077731c 100644 --- a/arch/riscv/boot/dts/spacemit/k1.dtsi +++ b/arch/riscv/boot/dts/spacemit/k1.dtsi @@ -459,6 +459,19 @@ pwm7: pwm@d401bc00 { status = "disabled"; }; + i2c8: i2c@d401d800 { + compatible = "spacemit,k1-i2c"; + reg = <0x0 0xd401d800 0x0 0x38>; + #address-cells = <1>; + #size-cells = <0>; + clocks = <&syscon_apbc CLK_TWSI8>, + <&syscon_apbc CLK_TWSI8_BUS>; + clock-names = "func", "bus"; + clock-frequency = <400000>; + interrupts = <19>; + status = "disabled"; + }; + pinctrl: pinctrl@d401e000 { compatible = "spacemit,k1-pinctrl"; reg = <0x0 0xd401e000 0x0 0x400>; From 1df07a40453fd652132051419140950d47941fe9 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Mon, 25 Aug 2025 12:20:55 -0500 Subject: [PATCH 03/15] riscv: dts: spacemit: define fixed regulators Define the DC power input and the 4v power as fixed supplies in the Banana Pi BPI-F3. Signed-off-by: Alex Elder Link: https://lore.kernel.org/r/20250825172057.163883-7-elder@riscstar.com Signed-off-by: Yixun Lan --- .../boot/dts/spacemit/k1-bananapi-f3.dts | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts index b33ac47fc6bd..42762f22ceb1 100644 --- a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts +++ b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts @@ -30,6 +30,25 @@ led1 { default-state = "on"; }; }; + + reg_dc_in: dc-in-12v { + compatible = "regulator-fixed"; + regulator-name = "dc_in_12v"; + regulator-min-microvolt = <12000000>; + regulator-max-microvolt = <12000000>; + regulator-boot-on; + regulator-always-on; + }; + + reg_vcc_4v: vcc-4v { + compatible = "regulator-fixed"; + regulator-name = "vcc_4v"; + regulator-min-microvolt = <4000000>; + regulator-max-microvolt = <4000000>; + regulator-boot-on; + regulator-always-on; + vin-supply = <®_dc_in>; + }; }; &emmc { From 09a412d397484e76588707d85ccc37f71e491091 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Mon, 25 Aug 2025 12:20:56 -0500 Subject: [PATCH 04/15] riscv: dts: spacemit: define regulator constraints Define basic constraints for the regulators in the SpacemiT P1 PMIC, as implemented in the Banana Pi BPI-F3. Signed-off-by: Alex Elder Link: https://lore.kernel.org/r/20250825172057.163883-8-elder@riscstar.com Signed-off-by: Yixun Lan --- .../boot/dts/spacemit/k1-bananapi-f3.dts | 104 ++++++++++++++++++ 1 file changed, 104 insertions(+) diff --git a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts index 42762f22ceb1..b3322dcac31a 100644 --- a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts +++ b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts @@ -120,6 +120,110 @@ pmic@41 { compatible = "spacemit,p1"; reg = <0x41>; interrupts = <64>; + vin-supply = <®_vcc_4v>; + + regulators { + buck1 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3450000>; + regulator-ramp-delay = <5000>; + regulator-always-on; + }; + + buck2 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3450000>; + regulator-ramp-delay = <5000>; + regulator-always-on; + }; + + buck3 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <1800000>; + regulator-ramp-delay = <5000>; + regulator-always-on; + }; + + buck4 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3300000>; + regulator-ramp-delay = <5000>; + regulator-always-on; + }; + + buck5 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3450000>; + regulator-ramp-delay = <5000>; + regulator-always-on; + }; + + buck6 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3450000>; + regulator-ramp-delay = <5000>; + regulator-always-on; + }; + + aldo1 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3400000>; + regulator-boot-on; + }; + + aldo2 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3400000>; + }; + + aldo3 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3400000>; + }; + + aldo4 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3400000>; + }; + + dldo1 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3400000>; + regulator-boot-on; + }; + + dldo2 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3400000>; + }; + + dldo3 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3400000>; + }; + + dldo4 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3400000>; + regulator-always-on; + }; + + dldo5 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3400000>; + }; + + dldo6 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3400000>; + regulator-always-on; + }; + + dldo7 { + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <3400000>; + }; + }; }; }; From dcca2287773b69201b756723e8d45b6b8ad81b34 Mon Sep 17 00:00:00 2001 From: Aurelien Jarno Date: Fri, 26 Sep 2025 19:54:37 +0200 Subject: [PATCH 05/15] riscv: dts: spacemit: enable the i2c2 adapter on BPI-F3 Define properties for the I2C adapter, and enable it on the BPI-F3. It will be used by the 24c02 eeprom. Signed-off-by: Aurelien Jarno Reviewed-by: Troy Mitchell Reviewed-by: Vivian Wang Reviewed-by: Yixun Lan Link: https://lore.kernel.org/r/20250926175833.3048516-2-aurelien@aurel32.net Signed-off-by: Yixun Lan --- arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts | 6 ++++++ arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi | 7 +++++++ arch/riscv/boot/dts/spacemit/k1.dtsi | 13 +++++++++++++ 3 files changed, 26 insertions(+) diff --git a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts index b3322dcac31a..4113e68b8490 100644 --- a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts +++ b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts @@ -111,6 +111,12 @@ &pdma { status = "okay"; }; +&i2c2 { + pinctrl-0 = <&i2c2_0_cfg>; + pinctrl-names = "default"; + status = "okay"; +}; + &i2c8 { pinctrl-0 = <&i2c8_cfg>; pinctrl-names = "default"; diff --git a/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi index b71a65ca66fc..4eef81d583f3 100644 --- a/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi +++ b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi @@ -59,6 +59,13 @@ gmac1-pins { }; }; + i2c2_0_cfg: i2c2-0-cfg { + i2c2-0-pins { + pinmux = , /* I2C2_SCL */ + ; /* I2C2_SDA */ + }; + }; + i2c8_cfg: i2c8-cfg { i2c8-0-pins { pinmux = , /* PWR_SCL */ diff --git a/arch/riscv/boot/dts/spacemit/k1.dtsi b/arch/riscv/boot/dts/spacemit/k1.dtsi index 3de35077731c..af35f9cd6435 100644 --- a/arch/riscv/boot/dts/spacemit/k1.dtsi +++ b/arch/riscv/boot/dts/spacemit/k1.dtsi @@ -459,6 +459,19 @@ pwm7: pwm@d401bc00 { status = "disabled"; }; + i2c2: i2c@d4012000 { + compatible = "spacemit,k1-i2c"; + reg = <0x0 0xd4012000 0x0 0x38>; + #address-cells = <1>; + #size-cells = <0>; + clocks = <&syscon_apbc CLK_TWSI2>, + <&syscon_apbc CLK_TWSI2_BUS>; + clock-names = "func", "bus"; + clock-frequency = <400000>; + interrupts = <38>; + status = "disabled"; + }; + i2c8: i2c@d401d800 { compatible = "spacemit,k1-i2c"; reg = <0x0 0xd401d800 0x0 0x38>; From bfce75e2345fa1ecbf046e696994132f56d6db1c Mon Sep 17 00:00:00 2001 From: Aurelien Jarno Date: Fri, 26 Sep 2025 19:54:38 +0200 Subject: [PATCH 06/15] riscv: dts: spacemit: add 24c02 eeprom on BPI-F3 The BPI-F3 board includes a 24c02 eeprom, that stores the MAC addresses of the two network interfaces and the board's serial number. These values are also exposed via an onie,tlv-layout nvmem layout. The eeprom is marked as read-only since its contents are not supposed to be modified. Signed-off-by: Aurelien Jarno Reviewed-by: Troy Mitchell Reviewed-by: Vivian Wang Reviewed-by: Yixun Lan Link: https://lore.kernel.org/r/20250926175833.3048516-3-aurelien@aurel32.net Signed-off-by: Yixun Lan --- .../boot/dts/spacemit/k1-bananapi-f3.dts | 25 ++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-) diff --git a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts index 4113e68b8490..487278ea9273 100644 --- a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts +++ b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts @@ -115,6 +115,29 @@ &i2c2 { pinctrl-0 = <&i2c2_0_cfg>; pinctrl-names = "default"; status = "okay"; + + eeprom@50 { + compatible = "atmel,24c02"; + reg = <0x50>; + vcc-supply = <&buck3_1v8>; /* EEPROM_VCC1V8 */ + pagesize = <16>; + read-only; + size = <256>; + + nvmem-layout { + compatible = "onie,tlv-layout"; + + mac-address { + #nvmem-cell-cells = <1>; + }; + + num-macs { + }; + + serial-number { + }; + }; + }; }; &i2c8 { @@ -143,7 +166,7 @@ buck2 { regulator-always-on; }; - buck3 { + buck3_1v8: buck3 { regulator-min-microvolt = <500000>; regulator-max-microvolt = <1800000>; regulator-ramp-delay = <5000>; From 859ce3828f0b462e991c24224390def4c8fea673 Mon Sep 17 00:00:00 2001 From: Aurelien Jarno Date: Fri, 26 Sep 2025 19:54:39 +0200 Subject: [PATCH 07/15] riscv: dts: spacemit: add i2c aliases on BPI-F3 Add i2c aliases for i2c2 and i2c8 on BPI-F3. This is useful to keep a stable number for the /dev entries after loading the i2c-dev module. Signed-off-by: Aurelien Jarno Reviewed-by: Troy Mitchell Reviewed-by: Vivian Wang Reviewed-by: Yixun Lan Link: https://lore.kernel.org/r/20250926175833.3048516-4-aurelien@aurel32.net Signed-off-by: Yixun Lan --- arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts index 487278ea9273..33ca816bfd4b 100644 --- a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts +++ b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts @@ -14,6 +14,8 @@ aliases { ethernet0 = ð0; ethernet1 = ð1; serial0 = &uart0; + i2c2 = &i2c2; + i2c8 = &i2c8; }; chosen { From 9813395078352fed03c88742bd39b9c4a0e40c15 Mon Sep 17 00:00:00 2001 From: Michael Opdenacker Date: Wed, 22 Oct 2025 20:18:38 +0000 Subject: [PATCH 08/15] riscv: dts: spacemit: add Ethernet and PDMA to OrangePi RV2 The OrangePi RV2 board ships two RGMII ethernet ports. Each has an external Motorcomm YT8531C PHY attached, the PHY uses GPIO for reset pin control. Enable PDMA for the SpacemiT K1-based SoC in the OrangePi RV2 board. Signed-off-by: Michael Opdenacker Reviewed-by: Yixun Lan Link: https://lore.kernel.org/r/20251022201807.1474789-2-michael.opdenacker@rootcommit.com Signed-off-by: Yixun Lan --- .../boot/dts/spacemit/k1-orangepi-rv2.dts | 52 +++++++++++++++++++ 1 file changed, 52 insertions(+) diff --git a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts index 337240ebb7b7..41dc8e35e6eb 100644 --- a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts +++ b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts @@ -15,6 +15,8 @@ / { aliases { serial0 = &uart0; + ethernet0 = ð0; + ethernet1 = ð1; }; chosen { @@ -33,6 +35,56 @@ led1 { }; }; +ð0 { + phy-handle = <&rgmii0>; + phy-mode = "rgmii-id"; + pinctrl-names = "default"; + pinctrl-0 = <&gmac0_cfg>; + rx-internal-delay-ps = <0>; + tx-internal-delay-ps = <0>; + status = "okay"; + + mdio-bus { + #address-cells = <0x1>; + #size-cells = <0x0>; + + reset-gpios = <&gpio K1_GPIO(110) GPIO_ACTIVE_LOW>; + reset-delay-us = <10000>; + reset-post-delay-us = <100000>; + + rgmii0: phy@1 { + reg = <0x1>; + }; + }; +}; + +ð1 { + phy-handle = <&rgmii1>; + phy-mode = "rgmii-id"; + pinctrl-names = "default"; + pinctrl-0 = <&gmac1_cfg>; + rx-internal-delay-ps = <0>; + tx-internal-delay-ps = <250>; + status = "okay"; + + mdio-bus { + #address-cells = <0x1>; + #size-cells = <0x0>; + + reset-gpios = <&gpio K1_GPIO(115) GPIO_ACTIVE_LOW>; + reset-delay-us = <10000>; + reset-post-delay-us = <100000>; + + rgmii1: phy@1 { + reg = <0x1>; + }; + }; +}; + +&pdma { + status = "okay"; +}; + &uart0 { pinctrl-names = "default"; pinctrl-0 = <&uart0_2_cfg>; From 2cc22890635ded33856e2761b780688f54a49393 Mon Sep 17 00:00:00 2001 From: Troy Mitchell Date: Thu, 23 Oct 2025 15:28:29 +0800 Subject: [PATCH 09/15] dt-bindings: riscv: spacemit: add MusePi Pro board Document the compatible string for the MusePi Pro [1]. It is a 1.8-inch single board computer based on the SpacemiT K1/M1 RISC-V SoC [2]. Here's a refined list of its core features: - SoC: SpacemiT M1/K1, 8-core 64-bit RISC-V. - Memory: LPDDR4X @ 2400MT/s, available in 8GB & 16GB options. - Storage: Onboard eMMC 5.1 (64GB/128GB options), M.2 M-Key for NVMe SSD (2230 size), and a microSD slot (UHS-II) for expansion. - Display: HDMI 1.4 (1080P@60Hz) and 2-lane MIPI DSI FPC (1080P@60Hz). - Connectivity: Onboard Wi-Fi 6 & Bluetooth 5.2, single Gigabit Ethernet port (RJ45). - USB: 4x USB 3.0 Type-A (host) and 1x USB 2.0 Type-C (device/OTG). - Expansion: Full-size miniPCIe slot and a second M.2 M-Key (2230). - GPIO: Standard 40-pin GPIO interface. - MIPI: 1x 4-lane MIPI CSI FPC and 2x MIPI DSI FPC interfaces. - Clock: Onboard RTC with battery support. Link: https://developer.spacemit.com/documentation?token=YJtdwnvvViPVcmkoPDpcvwfVnrh&type=pdf [1] Link: https://www.spacemit.com/en/key-stone-k1 [2] Acked-by: Conor Dooley Signed-off-by: Troy Mitchell Link: https://lore.kernel.org/r/20251023-k1-musepi-pro-dts-v4-1-01836303e10f@linux.spacemit.com Signed-off-by: Yixun Lan --- Documentation/devicetree/bindings/riscv/spacemit.yaml | 1 + 1 file changed, 1 insertion(+) diff --git a/Documentation/devicetree/bindings/riscv/spacemit.yaml b/Documentation/devicetree/bindings/riscv/spacemit.yaml index c56b62a6299a..52fe39296031 100644 --- a/Documentation/devicetree/bindings/riscv/spacemit.yaml +++ b/Documentation/devicetree/bindings/riscv/spacemit.yaml @@ -22,6 +22,7 @@ properties: - enum: - bananapi,bpi-f3 - milkv,jupiter + - spacemit,musepi-pro - xunlong,orangepi-rv2 - const: spacemit,k1 From 0ee59934662dfb89b43a8392e64ac4880c2fca88 Mon Sep 17 00:00:00 2001 From: Troy Mitchell Date: Thu, 23 Oct 2025 15:28:30 +0800 Subject: [PATCH 10/15] riscv: dts: spacemit: add MusePi Pro board device tree Add initial device tree support for the MusePi Pro board [1]. The board is using the SpacemiT K1/M1 SoC. This device tree is adapted from the SpacemiT vendor tree [2] and enables basic board functionality, including UART console, LED, eMMC, Ethernet, and PDMA. Link: https://developer.spacemit.com/documentation?token=YJtdwnvvViPVcmkoPDpcvwfVnrh&type=pdf [1] Link: https://gitee.com/bianbu-linux/linux-6.6/blob/k1-bl-v2.2.y/arch/riscv/boot/dts/spacemit/k1-x_MUSE-Pi-Pro.dts [2] Signed-off-by: Troy Mitchell Link: https://lore.kernel.org/r/20251023-k1-musepi-pro-dts-v4-2-01836303e10f@linux.spacemit.com Signed-off-by: Yixun Lan --- arch/riscv/boot/dts/spacemit/Makefile | 1 + .../riscv/boot/dts/spacemit/k1-musepi-pro.dts | 79 +++++++++++++++++++ 2 files changed, 80 insertions(+) create mode 100644 arch/riscv/boot/dts/spacemit/k1-musepi-pro.dts diff --git a/arch/riscv/boot/dts/spacemit/Makefile b/arch/riscv/boot/dts/spacemit/Makefile index 152832644870..942ecb38bea0 100644 --- a/arch/riscv/boot/dts/spacemit/Makefile +++ b/arch/riscv/boot/dts/spacemit/Makefile @@ -1,4 +1,5 @@ # SPDX-License-Identifier: GPL-2.0 dtb-$(CONFIG_ARCH_SPACEMIT) += k1-bananapi-f3.dtb dtb-$(CONFIG_ARCH_SPACEMIT) += k1-milkv-jupiter.dtb +dtb-$(CONFIG_ARCH_SPACEMIT) += k1-musepi-pro.dtb dtb-$(CONFIG_ARCH_SPACEMIT) += k1-orangepi-rv2.dtb diff --git a/arch/riscv/boot/dts/spacemit/k1-musepi-pro.dts b/arch/riscv/boot/dts/spacemit/k1-musepi-pro.dts new file mode 100644 index 000000000000..29e333b670cf --- /dev/null +++ b/arch/riscv/boot/dts/spacemit/k1-musepi-pro.dts @@ -0,0 +1,79 @@ +// SPDX-License-Identifier: (GPL-2.0 OR MIT) +/* + * Copyright (C) 2024 Yangyu Chen + * Copyright (C) 2025 SpacemiT, Inc + * Copyright (C) 2025 Troy Mitchell + */ + +/dts-v1/; + +#include "k1.dtsi" +#include "k1-pinctrl.dtsi" + +/ { + model = "SpacemiT MusePi Pro"; + compatible = "spacemit,musepi-pro", "spacemit,k1"; + + aliases { + ethernet0 = ð0; + serial0 = &uart0; + }; + + chosen { + stdout-path = "serial0"; + }; + + leds { + compatible = "gpio-leds"; + + led1 { + label = "sys-led"; + gpios = <&gpio K1_GPIO(96) GPIO_ACTIVE_HIGH>; + linux,default-trigger = "heartbeat"; + default-state = "on"; + }; + }; +}; + +&emmc { + bus-width = <8>; + mmc-hs400-1_8v; + mmc-hs400-enhanced-strobe; + non-removable; + no-sd; + no-sdio; + status = "okay"; +}; + +ð0 { + phy-handle = <&rgmii0>; + phy-mode = "rgmii-id"; + pinctrl-0 = <&gmac0_cfg>; + pinctrl-names = "default"; + rx-internal-delay-ps = <0>; + tx-internal-delay-ps = <0>; + status = "okay"; + + mdio-bus { + #address-cells = <0x1>; + #size-cells = <0x0>; + + reset-gpios = <&gpio K1_GPIO(110) GPIO_ACTIVE_LOW>; + reset-delay-us = <10000>; + reset-post-delay-us = <100000>; + + rgmii0: phy@1 { + reg = <0x1>; + }; + }; +}; + +&pdma { + status = "okay"; +}; + +&uart0 { + pinctrl-0 = <&uart0_2_cfg>; + pinctrl-names = "default"; + status = "okay"; +}; From 41d34e0b5497f919229d32580fbe34386087458f Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Mon, 27 Oct 2025 08:30:06 -0500 Subject: [PATCH 11/15] riscv: dts: spacemit: enable K1 SoC QSPI on BPI-F3 Define DTS nodes to enable support for QSPI on the K1 SoC, including the pin control configuration used. Enable QSPI on the Banana Pi BPI-F3 board. Signed-off-by: Alex Elder Link: https://lore.kernel.org/r/20251027133008.360237-9-elder@riscstar.com Signed-off-by: Yixun Lan --- .../boot/dts/spacemit/k1-bananapi-f3.dts | 6 ++++++ arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi | 21 +++++++++++++++++++ arch/riscv/boot/dts/spacemit/k1.dtsi | 16 ++++++++++++++ 3 files changed, 43 insertions(+) diff --git a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts index 33ca816bfd4b..02f218a16318 100644 --- a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts +++ b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts @@ -113,6 +113,12 @@ &pdma { status = "okay"; }; +&qspi { + pinctrl-names = "default"; + pinctrl-0 = <&qspi_cfg>; + status = "okay"; +}; + &i2c2 { pinctrl-0 = <&i2c2_0_cfg>; pinctrl-names = "default"; diff --git a/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi index 4eef81d583f3..e922e05ff856 100644 --- a/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi +++ b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi @@ -73,6 +73,27 @@ i2c8-0-pins { }; }; + qspi_cfg: qspi-cfg { + qspi-pins { + pinmux = , /* QSPI_DATA3 */ + , /* QSPI_DATA2 */ + , /* QSPI_DATA1 */ + , /* QSPI_DATA0 */ + ; /* QSPI_CLK */ + + bias-disable; + drive-strength = <19>; + power-source = <3300>; + }; + + qspi-cs1-pins { + pinmux = ; /* QSPI_CS1 */ + bias-pull-up = <0>; + drive-strength = <19>; + power-source = <3300>; + }; + }; + /omit-if-no-ref/ uart0_0_cfg: uart0-0-cfg { uart0-0-pins { diff --git a/arch/riscv/boot/dts/spacemit/k1.dtsi b/arch/riscv/boot/dts/spacemit/k1.dtsi index af35f9cd6435..47f97105bff0 100644 --- a/arch/riscv/boot/dts/spacemit/k1.dtsi +++ b/arch/riscv/boot/dts/spacemit/k1.dtsi @@ -823,6 +823,22 @@ uart9: serial@d4017800 { status = "disabled"; }; + qspi: spi@d420c000 { + compatible = "spacemit,k1-qspi"; + #address-cells = <1>; + #size-cells = <0>; + reg = <0x0 0xd420c000 0x0 0x1000>, + <0x0 0xb8000000 0x0 0xc00000>; + reg-names = "QuadSPI", "QuadSPI-memory"; + clocks = <&syscon_apmu CLK_QSPI_BUS>, + <&syscon_apmu CLK_QSPI>; + clock-names = "qspi_en", "qspi"; + resets = <&syscon_apmu RESET_QSPI>, + <&syscon_apmu RESET_QSPI_BUS>; + interrupts = <117>; + status = "disabled"; + }; + /* sec_uart1: 0xf0612000, not available from Linux */ }; From 323256d11e01d5ee2a0a2e7b682890498b90b212 Mon Sep 17 00:00:00 2001 From: Michael Opdenacker Date: Wed, 12 Nov 2025 04:44:40 +0000 Subject: [PATCH 12/15] dt-bindings: riscv: spacemit: Add OrangePi R2S board Document the compatible string for the OrangePi R2S board [1], which is marketed as using the Ky X1 SoC but is in fact identical in die and package to the SpacemiT K1 SoC [2]. Link: http://www.orangepi.org/html/hardWare/computerAndMicrocontrollers/details/Orange-Pi-R2S.html [1] Link: https://www.spacemit.com/en/key-stone-k1 [2] Signed-off-by: Michael Opdenacker Acked-by: Krzysztof Kozlowski Reviewed-by: Yixun Lan Link: https://lore.kernel.org/r/20251112044426.2351999-2-michael.opdenacker@rootcommit.com Signed-off-by: Yixun Lan --- Documentation/devicetree/bindings/riscv/spacemit.yaml | 1 + 1 file changed, 1 insertion(+) diff --git a/Documentation/devicetree/bindings/riscv/spacemit.yaml b/Documentation/devicetree/bindings/riscv/spacemit.yaml index 52fe39296031..9c49482002f7 100644 --- a/Documentation/devicetree/bindings/riscv/spacemit.yaml +++ b/Documentation/devicetree/bindings/riscv/spacemit.yaml @@ -23,6 +23,7 @@ properties: - bananapi,bpi-f3 - milkv,jupiter - spacemit,musepi-pro + - xunlong,orangepi-r2s - xunlong,orangepi-rv2 - const: spacemit,k1 From 63e572b11464a233f45ad469ba64b8b9e68a9cd1 Mon Sep 17 00:00:00 2001 From: Michael Opdenacker Date: Wed, 12 Nov 2025 04:44:42 +0000 Subject: [PATCH 13/15] riscv: dts: spacemit: Add OrangePi R2S board device tree Add initial device tree support for the OrangePi RV2 board [1], which is marketed as using the Ky X1 SoC but is identical in die and package to the SpacemiT K1 SoC [2]. Enable UART0, to boot into a serial console Two Gigabit Ethernet ports with RGMII interface standard support are enabled, each port is connected to an external Motorcomm YT8531C PHY chip which uses the GPIO for reset control. Enable PDMA. Enable 8 GB eMMC chip for storage. Link: http://www.orangepi.org/html/hardWare/computerAndMicrocontrollers/details/Orange-Pi-R2S.html [1] Link: https://www.spacemit.com/en/key-stone-k1 [2] Signed-off-by: Michael Opdenacker Reviewed-by: Yixun Lan Link: https://lore.kernel.org/r/20251112044426.2351999-3-michael.opdenacker@rootcommit.com Signed-off-by: Yixun Lan --- arch/riscv/boot/dts/spacemit/Makefile | 1 + .../boot/dts/spacemit/k1-orangepi-r2s.dts | 90 +++++++++++++++++++ 2 files changed, 91 insertions(+) create mode 100644 arch/riscv/boot/dts/spacemit/k1-orangepi-r2s.dts diff --git a/arch/riscv/boot/dts/spacemit/Makefile b/arch/riscv/boot/dts/spacemit/Makefile index 942ecb38bea0..95889e7269d1 100644 --- a/arch/riscv/boot/dts/spacemit/Makefile +++ b/arch/riscv/boot/dts/spacemit/Makefile @@ -2,4 +2,5 @@ dtb-$(CONFIG_ARCH_SPACEMIT) += k1-bananapi-f3.dtb dtb-$(CONFIG_ARCH_SPACEMIT) += k1-milkv-jupiter.dtb dtb-$(CONFIG_ARCH_SPACEMIT) += k1-musepi-pro.dtb +dtb-$(CONFIG_ARCH_SPACEMIT) += k1-orangepi-r2s.dtb dtb-$(CONFIG_ARCH_SPACEMIT) += k1-orangepi-rv2.dtb diff --git a/arch/riscv/boot/dts/spacemit/k1-orangepi-r2s.dts b/arch/riscv/boot/dts/spacemit/k1-orangepi-r2s.dts new file mode 100644 index 000000000000..58098c4a2aab --- /dev/null +++ b/arch/riscv/boot/dts/spacemit/k1-orangepi-r2s.dts @@ -0,0 +1,90 @@ +// SPDX-License-Identifier: (GPL-2.0 OR MIT) +/* + * Copyright (C) 2025 Michael Opdenacker + */ + +/dts-v1/; + +#include "k1.dtsi" +#include "k1-pinctrl.dtsi" + +/ { + model = "OrangePi R2S"; + compatible = "xunlong,orangepi-r2s", "spacemit,k1"; + + aliases { + serial0 = &uart0; + ethernet0 = ð0; + ethernet1 = ð1; + }; + + chosen { + stdout-path = "serial0"; + }; +}; + +&emmc { + bus-width = <8>; + mmc-hs400-1_8v; + mmc-hs400-enhanced-strobe; + non-removable; + no-sd; + no-sdio; + status = "okay"; +}; + +ð0 { + phy-handle = <&rgmii0>; + phy-mode = "rgmii-id"; + pinctrl-names = "default"; + pinctrl-0 = <&gmac0_cfg>; + rx-internal-delay-ps = <0>; + tx-internal-delay-ps = <0>; + status = "okay"; + + mdio-bus { + #address-cells = <0x1>; + #size-cells = <0x0>; + + reset-gpios = <&gpio K1_GPIO(110) GPIO_ACTIVE_LOW>; + reset-delay-us = <10000>; + reset-post-delay-us = <100000>; + + rgmii0: phy@1 { + reg = <0x1>; + }; + }; +}; + +ð1 { + phy-handle = <&rgmii1>; + phy-mode = "rgmii-id"; + pinctrl-names = "default"; + pinctrl-0 = <&gmac1_cfg>; + rx-internal-delay-ps = <0>; + tx-internal-delay-ps = <250>; + status = "okay"; + + mdio-bus { + #address-cells = <0x1>; + #size-cells = <0x0>; + + reset-gpios = <&gpio K1_GPIO(115) GPIO_ACTIVE_LOW>; + reset-delay-us = <10000>; + reset-post-delay-us = <100000>; + + rgmii1: phy@1 { + reg = <0x1>; + }; + }; +}; + +&pdma { + status = "okay"; +}; + +&uart0 { + pinctrl-names = "default"; + pinctrl-0 = <&uart0_2_cfg>; + status = "okay"; +}; From 3b70f972b6fb769bdee780b5b4639585845d6af4 Mon Sep 17 00:00:00 2001 From: Troy Mitchell Date: Wed, 5 Nov 2025 11:37:43 +0800 Subject: [PATCH 14/15] riscv: dts: spacemit: reorder i2c2 node Reorder the i2c2 node to its correct position according to its register address.This improves the readability and maintainability of the device tree file by adhering to the established ordering convention. No functional change is introduced by this reordering. Signed-off-by: Troy Mitchell Link: https://lore.kernel.org/r/20251105-k1-add-i2c-node-v1-1-d18dae246137@linux.spacemit.com Signed-off-by: Yixun Lan --- arch/riscv/boot/dts/spacemit/k1.dtsi | 26 +++++++++++++------------- 1 file changed, 13 insertions(+), 13 deletions(-) diff --git a/arch/riscv/boot/dts/spacemit/k1.dtsi b/arch/riscv/boot/dts/spacemit/k1.dtsi index 47f97105bff0..e3de4815e811 100644 --- a/arch/riscv/boot/dts/spacemit/k1.dtsi +++ b/arch/riscv/boot/dts/spacemit/k1.dtsi @@ -358,6 +358,19 @@ syscon_rcpu2: system-controller@c0888000 { #reset-cells = <1>; }; + i2c2: i2c@d4012000 { + compatible = "spacemit,k1-i2c"; + reg = <0x0 0xd4012000 0x0 0x38>; + #address-cells = <1>; + #size-cells = <0>; + clocks = <&syscon_apbc CLK_TWSI2>, + <&syscon_apbc CLK_TWSI2_BUS>; + clock-names = "func", "bus"; + clock-frequency = <400000>; + interrupts = <38>; + status = "disabled"; + }; + syscon_apbc: system-controller@d4015000 { compatible = "spacemit,k1-syscon-apbc"; reg = <0x0 0xd4015000 0x0 0x1000>; @@ -459,19 +472,6 @@ pwm7: pwm@d401bc00 { status = "disabled"; }; - i2c2: i2c@d4012000 { - compatible = "spacemit,k1-i2c"; - reg = <0x0 0xd4012000 0x0 0x38>; - #address-cells = <1>; - #size-cells = <0>; - clocks = <&syscon_apbc CLK_TWSI2>, - <&syscon_apbc CLK_TWSI2_BUS>; - clock-names = "func", "bus"; - clock-frequency = <400000>; - interrupts = <38>; - status = "disabled"; - }; - i2c8: i2c@d401d800 { compatible = "spacemit,k1-i2c"; reg = <0x0 0xd401d800 0x0 0x38>; From 5a97a38c22799a802f33001dcb022d2942fe4a41 Mon Sep 17 00:00:00 2001 From: Troy Mitchell Date: Wed, 5 Nov 2025 11:37:44 +0800 Subject: [PATCH 15/15] riscv: dts: spacemit: define all missing I2C controller nodes SpacemiT K1 SoC is equipped with a total of nine I2C controllers, ranging from I2C0 to I2C8. Prior to this change, only I2C2 and I2C8 were explicitly defined within the device tree. This patch comprehensively adds the device tree node definitions for I2C controller 0, 1, 4 to 7. The I2C3 node is not added because it belongs exclusively to the secure domain which not used in the linux realm. All newly added I2C nodes are set to "disabled" status by default, allowing future board-specific device tree to enable and configure. Signed-off-by: Troy Mitchell Link: https://lore.kernel.org/r/20251105-k1-add-i2c-node-v1-2-d18dae246137@linux.spacemit.com Signed-off-by: Yixun Lan --- arch/riscv/boot/dts/spacemit/k1.dtsi | 80 ++++++++++++++++++++++++++++ 1 file changed, 80 insertions(+) diff --git a/arch/riscv/boot/dts/spacemit/k1.dtsi b/arch/riscv/boot/dts/spacemit/k1.dtsi index e3de4815e811..7818ca4979b6 100644 --- a/arch/riscv/boot/dts/spacemit/k1.dtsi +++ b/arch/riscv/boot/dts/spacemit/k1.dtsi @@ -358,6 +358,32 @@ syscon_rcpu2: system-controller@c0888000 { #reset-cells = <1>; }; + i2c0: i2c@d4010800 { + compatible = "spacemit,k1-i2c"; + reg = <0x0 0xd4010800 0x0 0x38>; + #address-cells = <1>; + #size-cells = <0>; + clocks = <&syscon_apbc CLK_TWSI0>, + <&syscon_apbc CLK_TWSI0_BUS>; + clock-names = "func", "bus"; + clock-frequency = <400000>; + interrupts = <36>; + status = "disabled"; + }; + + i2c1: i2c@d4011000 { + compatible = "spacemit,k1-i2c"; + reg = <0x0 0xd4011000 0x0 0x38>; + #address-cells = <1>; + #size-cells = <0>; + clocks = <&syscon_apbc CLK_TWSI1>, + <&syscon_apbc CLK_TWSI1_BUS>; + clock-names = "func", "bus"; + clock-frequency = <400000>; + interrupts = <37>; + status = "disabled"; + }; + i2c2: i2c@d4012000 { compatible = "spacemit,k1-i2c"; reg = <0x0 0xd4012000 0x0 0x38>; @@ -371,6 +397,32 @@ i2c2: i2c@d4012000 { status = "disabled"; }; + i2c4: i2c@d4012800 { + compatible = "spacemit,k1-i2c"; + reg = <0x0 0xd4012800 0x0 0x38>; + #address-cells = <1>; + #size-cells = <0>; + clocks = <&syscon_apbc CLK_TWSI4>, + <&syscon_apbc CLK_TWSI4_BUS>; + clock-names = "func", "bus"; + clock-frequency = <400000>; + interrupts = <40>; + status = "disabled"; + }; + + i2c5: i2c@d4013800 { + compatible = "spacemit,k1-i2c"; + reg = <0x0 0xd4013800 0x0 0x38>; + #address-cells = <1>; + #size-cells = <0>; + clocks = <&syscon_apbc CLK_TWSI5>, + <&syscon_apbc CLK_TWSI5_BUS>; + clock-names = "func", "bus"; + clock-frequency = <400000>; + interrupts = <41>; + status = "disabled"; + }; + syscon_apbc: system-controller@d4015000 { compatible = "spacemit,k1-syscon-apbc"; reg = <0x0 0xd4015000 0x0 0x1000>; @@ -382,6 +434,19 @@ syscon_apbc: system-controller@d4015000 { #reset-cells = <1>; }; + i2c6: i2c@d4018800 { + compatible = "spacemit,k1-i2c"; + reg = <0x0 0xd4018800 0x0 0x38>; + #address-cells = <1>; + #size-cells = <0>; + clocks = <&syscon_apbc CLK_TWSI6>, + <&syscon_apbc CLK_TWSI6_BUS>; + clock-names = "func", "bus"; + clock-frequency = <400000>; + interrupts = <70>; + status = "disabled"; + }; + gpio: gpio@d4019000 { compatible = "spacemit,k1-gpio"; reg = <0x0 0xd4019000 0x0 0x100>; @@ -472,6 +537,19 @@ pwm7: pwm@d401bc00 { status = "disabled"; }; + i2c7: i2c@d401d000 { + compatible = "spacemit,k1-i2c"; + reg = <0x0 0xd401d000 0x0 0x38>; + #address-cells = <1>; + #size-cells = <0>; + clocks = <&syscon_apbc CLK_TWSI7>, + <&syscon_apbc CLK_TWSI7_BUS>; + clock-names = "func", "bus"; + clock-frequency = <400000>; + interrupts = <18>; + status = "disabled"; + }; + i2c8: i2c@d401d800 { compatible = "spacemit,k1-i2c"; reg = <0x0 0xd401d800 0x0 0x38>; @@ -669,6 +747,8 @@ syscon_apbc2: system-controller@f0610000 { #reset-cells = <1>; }; + /* sec_i2c3: 0xf0614000, not available from Linux */ + camera-bus { compatible = "simple-bus"; ranges;