From cdc2d6685c13cc736b4c1c70b184638897c5c46f Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Tue, 29 Oct 2019 20:14:44 +0100 Subject: [PATCH 1/5] dt-bindings: clock: tegra: Rename SOR0_LVDS to SOR0_OUT Tegra186 and later call this clock SOR0_OUT. Rename it on Tegra124 and Tegra210 to make the names consistent. Keep the old name for now to keep device trees buildable until they have all been converted. Signed-off-by: Thierry Reding --- include/dt-bindings/clock/tegra124-car-common.h | 3 ++- include/dt-bindings/clock/tegra210-car.h | 3 ++- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/include/dt-bindings/clock/tegra124-car-common.h b/include/dt-bindings/clock/tegra124-car-common.h index 4331f1df6ebe..0c4f5be0a742 100644 --- a/include/dt-bindings/clock/tegra124-car-common.h +++ b/include/dt-bindings/clock/tegra124-car-common.h @@ -337,7 +337,8 @@ #define TEGRA124_CLK_CLK_OUT_3_MUX 308 /* 309 */ /* 310 */ -#define TEGRA124_CLK_SOR0_LVDS 311 +#define TEGRA124_CLK_SOR0_LVDS 311 /* deprecated */ +#define TEGRA124_CLK_SOR0_OUT 311 #define TEGRA124_CLK_XUSB_SS_DIV2 312 #define TEGRA124_CLK_PLL_M_UD 313 diff --git a/include/dt-bindings/clock/tegra210-car.h b/include/dt-bindings/clock/tegra210-car.h index 6b77e721f6b1..0bfbfc912c68 100644 --- a/include/dt-bindings/clock/tegra210-car.h +++ b/include/dt-bindings/clock/tegra210-car.h @@ -391,7 +391,8 @@ #define TEGRA210_CLK_CLK_OUT_3_MUX 358 #define TEGRA210_CLK_DSIA_MUX 359 #define TEGRA210_CLK_DSIB_MUX 360 -#define TEGRA210_CLK_SOR0_LVDS 361 +#define TEGRA210_CLK_SOR0_LVDS 361 /* deprecated */ +#define TEGRA210_CLK_SOR0_OUT 361 #define TEGRA210_CLK_XUSB_SS_DIV2 362 #define TEGRA210_CLK_PLL_M_UD 363 From db45f0f05c3ae9f9e9c2784e779fcf5e812db425 Mon Sep 17 00:00:00 2001 From: Dmitry Osipenko Date: Thu, 25 Jul 2019 18:18:30 +0300 Subject: [PATCH 2/5] dt-bindings: regulator: Document regulators coupling of NVIDIA Tegra20/30 SoCs There is voltage coupling between three regulators on Tegra20 boards and between two on Tegra30. The voltage coupling is a SoC-level feature and thus it is mandatory and common for all of the Tegra boards. Signed-off-by: Dmitry Osipenko Reviewed-by: Rob Herring Signed-off-by: Thierry Reding --- .../nvidia,tegra-regulators-coupling.txt | 65 +++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 Documentation/devicetree/bindings/regulator/nvidia,tegra-regulators-coupling.txt diff --git a/Documentation/devicetree/bindings/regulator/nvidia,tegra-regulators-coupling.txt b/Documentation/devicetree/bindings/regulator/nvidia,tegra-regulators-coupling.txt new file mode 100644 index 000000000000..4bf2dbf7c6cc --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/nvidia,tegra-regulators-coupling.txt @@ -0,0 +1,65 @@ +NVIDIA Tegra Regulators Coupling +================================ + +NVIDIA Tegra SoC's have a mandatory voltage-coupling between regulators. +Thus on Tegra20 there are 3 coupled regulators and on NVIDIA Tegra30 +there are 2. + +Tegra20 voltage coupling +------------------------ + +On Tegra20 SoC's there are 3 coupled regulators: CORE, RTC and CPU. +The CORE and RTC voltages shall be in a range of 170mV from each other +and they both shall be higher than the CPU voltage by at least 120mV. + +Tegra30 voltage coupling +------------------------ + +On Tegra30 SoC's there are 2 coupled regulators: CORE and CPU. The CORE +and CPU voltages shall be in a range of 300mV from each other and CORE +voltage shall be higher than the CPU by N mV, where N depends on the CPU +voltage. + +Required properties: +- nvidia,tegra-core-regulator: Boolean property that designates regulator + as the "Core domain" voltage regulator. +- nvidia,tegra-rtc-regulator: Boolean property that designates regulator + as the "RTC domain" voltage regulator. +- nvidia,tegra-cpu-regulator: Boolean property that designates regulator + as the "CPU domain" voltage regulator. + +Example: + + pmic { + regulators { + core_vdd_reg: core { + regulator-name = "vdd_core"; + regulator-min-microvolt = <950000>; + regulator-max-microvolt = <1300000>; + regulator-coupled-with = <&rtc_vdd_reg &cpu_vdd_reg>; + regulator-coupled-max-spread = <170000 550000>; + + nvidia,tegra-core-regulator; + }; + + rtc_vdd_reg: rtc { + regulator-name = "vdd_rtc"; + regulator-min-microvolt = <950000>; + regulator-max-microvolt = <1300000>; + regulator-coupled-with = <&core_vdd_reg &cpu_vdd_reg>; + regulator-coupled-max-spread = <170000 550000>; + + nvidia,tegra-rtc-regulator; + }; + + cpu_vdd_reg: cpu { + regulator-name = "vdd_cpu"; + regulator-min-microvolt = <750000>; + regulator-max-microvolt = <1125000>; + regulator-coupled-with = <&core_vdd_reg &rtc_vdd_reg>; + regulator-coupled-max-spread = <550000 550000>; + + nvidia,tegra-cpu-regulator; + }; + }; + }; From 8da65c377b21d1b3607f42f7f7646ca9bd87cb2a Mon Sep 17 00:00:00 2001 From: Dmitry Osipenko Date: Mon, 12 Aug 2019 00:00:37 +0300 Subject: [PATCH 3/5] dt-bindings: memory: tegra30: Convert to Tegra124 YAML The Tegra30 binding will actually differ from the Tegra124 a tad, in particular the EMEM configuration description. Hence rename the binding to Tegra124 during of the conversion to YAML. Reviewed-by: Rob Herring Signed-off-by: Dmitry Osipenko Reviewed-by: Rob Herring Signed-off-by: Thierry Reding --- .../nvidia,tegra124-mc.yaml | 152 ++++++++++++++++++ .../memory-controllers/nvidia,tegra30-mc.txt | 123 -------------- 2 files changed, 152 insertions(+), 123 deletions(-) create mode 100644 Documentation/devicetree/bindings/memory-controllers/nvidia,tegra124-mc.yaml delete mode 100644 Documentation/devicetree/bindings/memory-controllers/nvidia,tegra30-mc.txt diff --git a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra124-mc.yaml b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra124-mc.yaml new file mode 100644 index 000000000000..30d9fb193d7f --- /dev/null +++ b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra124-mc.yaml @@ -0,0 +1,152 @@ +# SPDX-License-Identifier: (GPL-2.0) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/memory-controllers/nvidia,tegra124-mc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: NVIDIA Tegra124 SoC Memory Controller + +maintainers: + - Jon Hunter + - Thierry Reding + +description: | + Tegra124 SoC features a hybrid 2x32-bit / 1x64-bit memory controller. + These are interleaved to provide high performance with the load shared across + two memory channels. The Tegra124 Memory Controller handles memory requests + from internal clients and arbitrates among them to allocate memory bandwidth + for DDR3L and LPDDR3 SDRAMs. + +properties: + compatible: + const: nvidia,tegra124-mc + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + clock-names: + items: + - const: mc + + interrupts: + maxItems: 1 + + "#reset-cells": + const: 1 + + "#iommu-cells": + const: 1 + +patternProperties: + "^emc-timings-[0-9]+$": + type: object + properties: + nvidia,ram-code: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + Value of RAM_CODE this timing set is used for. + + patternProperties: + "^timing-[0-9]+$": + type: object + properties: + clock-frequency: + description: + Memory clock rate in Hz. + minimum: 1000000 + maximum: 1066000000 + + nvidia,emem-configuration: + $ref: /schemas/types.yaml#/definitions/uint32-array + description: | + Values to be written to the EMEM register block. See section + "15.6.1 MC Registers" in the TRM. + items: + - description: MC_EMEM_ARB_CFG + - description: MC_EMEM_ARB_OUTSTANDING_REQ + - description: MC_EMEM_ARB_TIMING_RCD + - description: MC_EMEM_ARB_TIMING_RP + - description: MC_EMEM_ARB_TIMING_RC + - description: MC_EMEM_ARB_TIMING_RAS + - description: MC_EMEM_ARB_TIMING_FAW + - description: MC_EMEM_ARB_TIMING_RRD + - description: MC_EMEM_ARB_TIMING_RAP2PRE + - description: MC_EMEM_ARB_TIMING_WAP2PRE + - description: MC_EMEM_ARB_TIMING_R2R + - description: MC_EMEM_ARB_TIMING_W2W + - description: MC_EMEM_ARB_TIMING_R2W + - description: MC_EMEM_ARB_TIMING_W2R + - description: MC_EMEM_ARB_DA_TURNS + - description: MC_EMEM_ARB_DA_COVERS + - description: MC_EMEM_ARB_MISC0 + - description: MC_EMEM_ARB_MISC1 + - description: MC_EMEM_ARB_RING1_THROTTLE + + required: + - clock-frequency + - nvidia,emem-configuration + + additionalProperties: false + + required: + - nvidia,ram-code + + additionalProperties: false + +required: + - compatible + - reg + - interrupts + - clocks + - clock-names + - "#reset-cells" + - "#iommu-cells" + +additionalProperties: false + +examples: + - | + memory-controller@70019000 { + compatible = "nvidia,tegra124-mc"; + reg = <0x0 0x70019000 0x0 0x1000>; + clocks = <&tegra_car 32>; + clock-names = "mc"; + + interrupts = <0 77 4>; + + #iommu-cells = <1>; + #reset-cells = <1>; + + emc-timings-3 { + nvidia,ram-code = <3>; + + timing-12750000 { + clock-frequency = <12750000>; + + nvidia,emem-configuration = < + 0x40040001 /* MC_EMEM_ARB_CFG */ + 0x8000000a /* MC_EMEM_ARB_OUTSTANDING_REQ */ + 0x00000001 /* MC_EMEM_ARB_TIMING_RCD */ + 0x00000001 /* MC_EMEM_ARB_TIMING_RP */ + 0x00000002 /* MC_EMEM_ARB_TIMING_RC */ + 0x00000000 /* MC_EMEM_ARB_TIMING_RAS */ + 0x00000002 /* MC_EMEM_ARB_TIMING_FAW */ + 0x00000001 /* MC_EMEM_ARB_TIMING_RRD */ + 0x00000002 /* MC_EMEM_ARB_TIMING_RAP2PRE */ + 0x00000008 /* MC_EMEM_ARB_TIMING_WAP2PRE */ + 0x00000003 /* MC_EMEM_ARB_TIMING_R2R */ + 0x00000002 /* MC_EMEM_ARB_TIMING_W2W */ + 0x00000003 /* MC_EMEM_ARB_TIMING_R2W */ + 0x00000006 /* MC_EMEM_ARB_TIMING_W2R */ + 0x06030203 /* MC_EMEM_ARB_DA_TURNS */ + 0x000a0402 /* MC_EMEM_ARB_DA_COVERS */ + 0x77e30303 /* MC_EMEM_ARB_MISC0 */ + 0x70000f03 /* MC_EMEM_ARB_MISC1 */ + 0x001f0000 /* MC_EMEM_ARB_RING1_THROTTLE */ + >; + }; + }; + }; diff --git a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra30-mc.txt b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra30-mc.txt deleted file mode 100644 index a878b5908a4d..000000000000 --- a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra30-mc.txt +++ /dev/null @@ -1,123 +0,0 @@ -NVIDIA Tegra Memory Controller device tree bindings -=================================================== - -memory-controller node ----------------------- - -Required properties: -- compatible: Should be "nvidia,tegra-mc" -- reg: Physical base address and length of the controller's registers. -- clocks: Must contain an entry for each entry in clock-names. - See ../clocks/clock-bindings.txt for details. -- clock-names: Must include the following entries: - - mc: the module's clock input -- interrupts: The interrupt outputs from the controller. -- #reset-cells : Should be 1. This cell represents memory client module ID. - The assignments may be found in header file - or in the TRM documentation. - -Required properties for Tegra30, Tegra114, Tegra124, Tegra132 and Tegra210: -- #iommu-cells: Should be 1. The single cell of the IOMMU specifier defines - the SWGROUP of the master. - -This device implements an IOMMU that complies with the generic IOMMU binding. -See ../iommu/iommu.txt for details. - -emc-timings subnode -------------------- - -The node should contain a "emc-timings" subnode for each supported RAM type (see field RAM_CODE in -register PMC_STRAPPING_OPT_A). - -Required properties for "emc-timings" nodes : -- nvidia,ram-code : Should contain the value of RAM_CODE this timing set is used for. - -timing subnode --------------- - -Each "emc-timings" node should contain a subnode for every supported EMC clock rate. - -Required properties for timing nodes : -- clock-frequency : Should contain the memory clock rate in Hz. -- nvidia,emem-configuration : Values to be written to the EMEM register block. For the Tegra124 SoC -(see section "15.6.1 MC Registers" in the TRM), these are the registers whose values need to be -specified, according to the board documentation: - - MC_EMEM_ARB_CFG - MC_EMEM_ARB_OUTSTANDING_REQ - MC_EMEM_ARB_TIMING_RCD - MC_EMEM_ARB_TIMING_RP - MC_EMEM_ARB_TIMING_RC - MC_EMEM_ARB_TIMING_RAS - MC_EMEM_ARB_TIMING_FAW - MC_EMEM_ARB_TIMING_RRD - MC_EMEM_ARB_TIMING_RAP2PRE - MC_EMEM_ARB_TIMING_WAP2PRE - MC_EMEM_ARB_TIMING_R2R - MC_EMEM_ARB_TIMING_W2W - MC_EMEM_ARB_TIMING_R2W - MC_EMEM_ARB_TIMING_W2R - MC_EMEM_ARB_DA_TURNS - MC_EMEM_ARB_DA_COVERS - MC_EMEM_ARB_MISC0 - MC_EMEM_ARB_MISC1 - MC_EMEM_ARB_RING1_THROTTLE - -Example SoC include file: - -/ { - mc: memory-controller@70019000 { - compatible = "nvidia,tegra124-mc"; - reg = <0x0 0x70019000 0x0 0x1000>; - clocks = <&tegra_car TEGRA124_CLK_MC>; - clock-names = "mc"; - - interrupts = ; - - #iommu-cells = <1>; - #reset-cells = <1>; - }; - - sdhci@700b0000 { - compatible = "nvidia,tegra124-sdhci"; - ... - iommus = <&mc TEGRA_SWGROUP_SDMMC1A>; - resets = <&mc TEGRA124_MC_RESET_SDMMC1>; - }; -}; - -Example board file: - -/ { - memory-controller@70019000 { - emc-timings-3 { - nvidia,ram-code = <3>; - - timing-12750000 { - clock-frequency = <12750000>; - - nvidia,emem-configuration = < - 0x40040001 /* MC_EMEM_ARB_CFG */ - 0x8000000a /* MC_EMEM_ARB_OUTSTANDING_REQ */ - 0x00000001 /* MC_EMEM_ARB_TIMING_RCD */ - 0x00000001 /* MC_EMEM_ARB_TIMING_RP */ - 0x00000002 /* MC_EMEM_ARB_TIMING_RC */ - 0x00000000 /* MC_EMEM_ARB_TIMING_RAS */ - 0x00000002 /* MC_EMEM_ARB_TIMING_FAW */ - 0x00000001 /* MC_EMEM_ARB_TIMING_RRD */ - 0x00000002 /* MC_EMEM_ARB_TIMING_RAP2PRE */ - 0x00000008 /* MC_EMEM_ARB_TIMING_WAP2PRE */ - 0x00000003 /* MC_EMEM_ARB_TIMING_R2R */ - 0x00000002 /* MC_EMEM_ARB_TIMING_W2W */ - 0x00000003 /* MC_EMEM_ARB_TIMING_R2W */ - 0x00000006 /* MC_EMEM_ARB_TIMING_W2R */ - 0x06030203 /* MC_EMEM_ARB_DA_TURNS */ - 0x000a0402 /* MC_EMEM_ARB_DA_COVERS */ - 0x77e30303 /* MC_EMEM_ARB_MISC0 */ - 0x70000f03 /* MC_EMEM_ARB_MISC1 */ - 0x001f0000 /* MC_EMEM_ARB_RING1_THROTTLE */ - >; - }; - }; - }; -}; From 785685b7a106185c63cb927ff5e4f518e47ad08c Mon Sep 17 00:00:00 2001 From: Dmitry Osipenko Date: Mon, 12 Aug 2019 00:00:38 +0300 Subject: [PATCH 4/5] dt-bindings: memory: Add binding for NVIDIA Tegra30 Memory Controller Add binding for the NVIDIA Tegra30 SoC Memory Controller. Signed-off-by: Dmitry Osipenko Reviewed-by: Rob Herring Signed-off-by: Thierry Reding --- .../memory-controllers/nvidia,tegra30-mc.yaml | 167 ++++++++++++++++++ 1 file changed, 167 insertions(+) create mode 100644 Documentation/devicetree/bindings/memory-controllers/nvidia,tegra30-mc.yaml diff --git a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra30-mc.yaml b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra30-mc.yaml new file mode 100644 index 000000000000..84fd57bcf0dc --- /dev/null +++ b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra30-mc.yaml @@ -0,0 +1,167 @@ +# SPDX-License-Identifier: (GPL-2.0) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/memory-controllers/nvidia,tegra30-mc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: NVIDIA Tegra30 SoC Memory Controller + +maintainers: + - Dmitry Osipenko + - Jon Hunter + - Thierry Reding + +description: | + Tegra30 Memory Controller architecturally consists of the following parts: + + Arbitration Domains, which can handle a single request or response per + clock from a group of clients. Typically, a system has a single Arbitration + Domain, but an implementation may divide the client space into multiple + Arbitration Domains to increase the effective system bandwidth. + + Protocol Arbiter, which manage a related pool of memory devices. A system + may have a single Protocol Arbiter or multiple Protocol Arbiters. + + Memory Crossbar, which routes request and responses between Arbitration + Domains and Protocol Arbiters. In the simplest version of the system, the + Memory Crossbar is just a pass through between a single Arbitration Domain + and a single Protocol Arbiter. + + Global Resources, which include things like configuration registers which + are shared across the Memory Subsystem. + + The Tegra30 Memory Controller handles memory requests from internal clients + and arbitrates among them to allocate memory bandwidth for DDR3L and LPDDR2 + SDRAMs. + +properties: + compatible: + const: nvidia,tegra30-mc + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + clock-names: + items: + - const: mc + + interrupts: + maxItems: 1 + + "#reset-cells": + const: 1 + + "#iommu-cells": + const: 1 + +patternProperties: + "^emc-timings-[0-9]+$": + type: object + properties: + nvidia,ram-code: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + Value of RAM_CODE this timing set is used for. + + patternProperties: + "^timing-[0-9]+$": + type: object + properties: + clock-frequency: + description: + Memory clock rate in Hz. + minimum: 1000000 + maximum: 900000000 + + nvidia,emem-configuration: + $ref: /schemas/types.yaml#/definitions/uint32-array + description: | + Values to be written to the EMEM register block. See section + "18.13.1 MC Registers" in the TRM. + items: + - description: MC_EMEM_ARB_CFG + - description: MC_EMEM_ARB_OUTSTANDING_REQ + - description: MC_EMEM_ARB_TIMING_RCD + - description: MC_EMEM_ARB_TIMING_RP + - description: MC_EMEM_ARB_TIMING_RC + - description: MC_EMEM_ARB_TIMING_RAS + - description: MC_EMEM_ARB_TIMING_FAW + - description: MC_EMEM_ARB_TIMING_RRD + - description: MC_EMEM_ARB_TIMING_RAP2PRE + - description: MC_EMEM_ARB_TIMING_WAP2PRE + - description: MC_EMEM_ARB_TIMING_R2R + - description: MC_EMEM_ARB_TIMING_W2W + - description: MC_EMEM_ARB_TIMING_R2W + - description: MC_EMEM_ARB_TIMING_W2R + - description: MC_EMEM_ARB_DA_TURNS + - description: MC_EMEM_ARB_DA_COVERS + - description: MC_EMEM_ARB_MISC0 + - description: MC_EMEM_ARB_RING1_THROTTLE + + required: + - clock-frequency + - nvidia,emem-configuration + + additionalProperties: false + + required: + - nvidia,ram-code + + additionalProperties: false + +required: + - compatible + - reg + - interrupts + - clocks + - clock-names + - "#reset-cells" + - "#iommu-cells" + +additionalProperties: false + +examples: + - | + memory-controller@7000f000 { + compatible = "nvidia,tegra30-mc"; + reg = <0x7000f000 0x400>; + clocks = <&tegra_car 32>; + clock-names = "mc"; + + interrupts = <0 77 4>; + + #iommu-cells = <1>; + #reset-cells = <1>; + + emc-timings-1 { + nvidia,ram-code = <1>; + + timing-667000000 { + clock-frequency = <667000000>; + + nvidia,emem-configuration = < + 0x0000000a /* MC_EMEM_ARB_CFG */ + 0xc0000079 /* MC_EMEM_ARB_OUTSTANDING_REQ */ + 0x00000003 /* MC_EMEM_ARB_TIMING_RCD */ + 0x00000004 /* MC_EMEM_ARB_TIMING_RP */ + 0x00000010 /* MC_EMEM_ARB_TIMING_RC */ + 0x0000000b /* MC_EMEM_ARB_TIMING_RAS */ + 0x0000000a /* MC_EMEM_ARB_TIMING_FAW */ + 0x00000001 /* MC_EMEM_ARB_TIMING_RRD */ + 0x00000003 /* MC_EMEM_ARB_TIMING_RAP2PRE */ + 0x0000000b /* MC_EMEM_ARB_TIMING_WAP2PRE */ + 0x00000002 /* MC_EMEM_ARB_TIMING_R2R */ + 0x00000002 /* MC_EMEM_ARB_TIMING_W2W */ + 0x00000004 /* MC_EMEM_ARB_TIMING_R2W */ + 0x00000008 /* MC_EMEM_ARB_TIMING_W2R */ + 0x08040202 /* MC_EMEM_ARB_DA_TURNS */ + 0x00130b10 /* MC_EMEM_ARB_DA_COVERS */ + 0x70ea1f11 /* MC_EMEM_ARB_MISC0 */ + 0x001f0000 /* MC_EMEM_ARB_RING1_THROTTLE */ + >; + }; + }; + }; From 641262f5e1ed5c96799e17595893fa1a703616ac Mon Sep 17 00:00:00 2001 From: Dmitry Osipenko Date: Mon, 12 Aug 2019 00:00:39 +0300 Subject: [PATCH 5/5] dt-bindings: memory: Add binding for NVIDIA Tegra30 External Memory Controller Add device-tree binding for NVIDIA Tegra30 External Memory Controller. The binding is based on the Tegra124 EMC binding since hardware is similar, although there are couple significant differences. Note that the memory timing description is given in a platform-specific form because there is no detailed information on how to convert a typical-common DDR timing into the register values. The timing format is borrowed from downstream kernel, hence there is no hurdle in regards to upstreaming of memory timings for the boards. Acked-by: Peter De Schrijver Signed-off-by: Dmitry Osipenko Reviewed-by: Rob Herring Signed-off-by: Thierry Reding --- .../nvidia,tegra30-emc.yaml | 336 ++++++++++++++++++ 1 file changed, 336 insertions(+) create mode 100644 Documentation/devicetree/bindings/memory-controllers/nvidia,tegra30-emc.yaml diff --git a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra30-emc.yaml b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra30-emc.yaml new file mode 100644 index 000000000000..7fe0ca14e324 --- /dev/null +++ b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra30-emc.yaml @@ -0,0 +1,336 @@ +# SPDX-License-Identifier: (GPL-2.0) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/memory-controllers/nvidia,tegra30-emc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: NVIDIA Tegra30 SoC External Memory Controller + +maintainers: + - Dmitry Osipenko + - Jon Hunter + - Thierry Reding + +description: | + The EMC interfaces with the off-chip SDRAM to service the request stream + sent from Memory Controller. The EMC also has various performance-affecting + settings beyond the obvious SDRAM configuration parameters and initialization + settings. Tegra30 EMC supports multiple JEDEC standard protocols: LPDDR2, + LPDDR3, and DDR3. + +properties: + compatible: + const: nvidia,tegra30-emc + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + interrupts: + maxItems: 1 + + nvidia,memory-controller: + $ref: /schemas/types.yaml#/definitions/phandle + description: + Phandle of the Memory Controller node. + +patternProperties: + "^emc-timings-[0-9]+$": + type: object + properties: + nvidia,ram-code: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + Value of RAM_CODE this timing set is used for. + + patternProperties: + "^timing-[0-9]+$": + type: object + properties: + clock-frequency: + description: + Memory clock rate in Hz. + minimum: 1000000 + maximum: 900000000 + + nvidia,emc-auto-cal-interval: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + Pad calibration interval in microseconds. + minimum: 0 + maximum: 2097151 + + nvidia,emc-mode-1: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + Mode Register 1. + + nvidia,emc-mode-2: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + Mode Register 2. + + nvidia,emc-mode-reset: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + Mode Register 0. + + nvidia,emc-zcal-cnt-long: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + Number of EMC clocks to wait before issuing any commands after + sending ZCAL_MRW_CMD. + minimum: 0 + maximum: 1023 + + nvidia,emc-cfg-dyn-self-ref: + type: boolean + description: + Dynamic self-refresh enabled. + + nvidia,emc-cfg-periodic-qrst: + type: boolean + description: + FBIO "read" FIFO periodic resetting enabled. + + nvidia,emc-configuration: + $ref: /schemas/types.yaml#/definitions/uint32-array + description: + EMC timing characterization data. These are the registers + (see section "18.13.2 EMC Registers" in the TRM) whose values + need to be specified, according to the board documentation. + items: + - description: EMC_RC + - description: EMC_RFC + - description: EMC_RAS + - description: EMC_RP + - description: EMC_R2W + - description: EMC_W2R + - description: EMC_R2P + - description: EMC_W2P + - description: EMC_RD_RCD + - description: EMC_WR_RCD + - description: EMC_RRD + - description: EMC_REXT + - description: EMC_WEXT + - description: EMC_WDV + - description: EMC_QUSE + - description: EMC_QRST + - description: EMC_QSAFE + - description: EMC_RDV + - description: EMC_REFRESH + - description: EMC_BURST_REFRESH_NUM + - description: EMC_PRE_REFRESH_REQ_CNT + - description: EMC_PDEX2WR + - description: EMC_PDEX2RD + - description: EMC_PCHG2PDEN + - description: EMC_ACT2PDEN + - description: EMC_AR2PDEN + - description: EMC_RW2PDEN + - description: EMC_TXSR + - description: EMC_TXSRDLL + - description: EMC_TCKE + - description: EMC_TFAW + - description: EMC_TRPAB + - description: EMC_TCLKSTABLE + - description: EMC_TCLKSTOP + - description: EMC_TREFBW + - description: EMC_QUSE_EXTRA + - description: EMC_FBIO_CFG6 + - description: EMC_ODT_WRITE + - description: EMC_ODT_READ + - description: EMC_FBIO_CFG5 + - description: EMC_CFG_DIG_DLL + - description: EMC_CFG_DIG_DLL_PERIOD + - description: EMC_DLL_XFORM_DQS0 + - description: EMC_DLL_XFORM_DQS1 + - description: EMC_DLL_XFORM_DQS2 + - description: EMC_DLL_XFORM_DQS3 + - description: EMC_DLL_XFORM_DQS4 + - description: EMC_DLL_XFORM_DQS5 + - description: EMC_DLL_XFORM_DQS6 + - description: EMC_DLL_XFORM_DQS7 + - description: EMC_DLL_XFORM_QUSE0 + - description: EMC_DLL_XFORM_QUSE1 + - description: EMC_DLL_XFORM_QUSE2 + - description: EMC_DLL_XFORM_QUSE3 + - description: EMC_DLL_XFORM_QUSE4 + - description: EMC_DLL_XFORM_QUSE5 + - description: EMC_DLL_XFORM_QUSE6 + - description: EMC_DLL_XFORM_QUSE7 + - description: EMC_DLI_TRIM_TXDQS0 + - description: EMC_DLI_TRIM_TXDQS1 + - description: EMC_DLI_TRIM_TXDQS2 + - description: EMC_DLI_TRIM_TXDQS3 + - description: EMC_DLI_TRIM_TXDQS4 + - description: EMC_DLI_TRIM_TXDQS5 + - description: EMC_DLI_TRIM_TXDQS6 + - description: EMC_DLI_TRIM_TXDQS7 + - description: EMC_DLL_XFORM_DQ0 + - description: EMC_DLL_XFORM_DQ1 + - description: EMC_DLL_XFORM_DQ2 + - description: EMC_DLL_XFORM_DQ3 + - description: EMC_XM2CMDPADCTRL + - description: EMC_XM2DQSPADCTRL2 + - description: EMC_XM2DQPADCTRL2 + - description: EMC_XM2CLKPADCTRL + - description: EMC_XM2COMPPADCTRL + - description: EMC_XM2VTTGENPADCTRL + - description: EMC_XM2VTTGENPADCTRL2 + - description: EMC_XM2QUSEPADCTRL + - description: EMC_XM2DQSPADCTRL3 + - description: EMC_CTT_TERM_CTRL + - description: EMC_ZCAL_INTERVAL + - description: EMC_ZCAL_WAIT_CNT + - description: EMC_MRS_WAIT_CNT + - description: EMC_AUTO_CAL_CONFIG + - description: EMC_CTT + - description: EMC_CTT_DURATION + - description: EMC_DYN_SELF_REF_CONTROL + - description: EMC_FBIO_SPARE + - description: EMC_CFG_RSV + + required: + - clock-frequency + - nvidia,emc-auto-cal-interval + - nvidia,emc-mode-1 + - nvidia,emc-mode-2 + - nvidia,emc-mode-reset + - nvidia,emc-zcal-cnt-long + - nvidia,emc-configuration + + additionalProperties: false + + required: + - nvidia,ram-code + + additionalProperties: false + +required: + - compatible + - reg + - interrupts + - clocks + - nvidia,memory-controller + +additionalProperties: false + +examples: + - | + external-memory-controller@7000f400 { + compatible = "nvidia,tegra30-emc"; + reg = <0x7000f400 0x400>; + interrupts = <0 78 4>; + clocks = <&tegra_car 57>; + + nvidia,memory-controller = <&mc>; + + emc-timings-1 { + nvidia,ram-code = <1>; + + timing-667000000 { + clock-frequency = <667000000>; + + nvidia,emc-auto-cal-interval = <0x001fffff>; + nvidia,emc-mode-1 = <0x80100002>; + nvidia,emc-mode-2 = <0x80200018>; + nvidia,emc-mode-reset = <0x80000b71>; + nvidia,emc-zcal-cnt-long = <0x00000040>; + nvidia,emc-cfg-periodic-qrst; + + nvidia,emc-configuration = < + 0x00000020 /* EMC_RC */ + 0x0000006a /* EMC_RFC */ + 0x00000017 /* EMC_RAS */ + 0x00000007 /* EMC_RP */ + 0x00000005 /* EMC_R2W */ + 0x0000000c /* EMC_W2R */ + 0x00000003 /* EMC_R2P */ + 0x00000011 /* EMC_W2P */ + 0x00000007 /* EMC_RD_RCD */ + 0x00000007 /* EMC_WR_RCD */ + 0x00000002 /* EMC_RRD */ + 0x00000001 /* EMC_REXT */ + 0x00000000 /* EMC_WEXT */ + 0x00000007 /* EMC_WDV */ + 0x0000000a /* EMC_QUSE */ + 0x00000009 /* EMC_QRST */ + 0x0000000b /* EMC_QSAFE */ + 0x00000011 /* EMC_RDV */ + 0x00001412 /* EMC_REFRESH */ + 0x00000000 /* EMC_BURST_REFRESH_NUM */ + 0x00000504 /* EMC_PRE_REFRESH_REQ_CNT */ + 0x00000002 /* EMC_PDEX2WR */ + 0x0000000e /* EMC_PDEX2RD */ + 0x00000001 /* EMC_PCHG2PDEN */ + 0x00000000 /* EMC_ACT2PDEN */ + 0x0000000c /* EMC_AR2PDEN */ + 0x00000016 /* EMC_RW2PDEN */ + 0x00000072 /* EMC_TXSR */ + 0x00000200 /* EMC_TXSRDLL */ + 0x00000005 /* EMC_TCKE */ + 0x00000015 /* EMC_TFAW */ + 0x00000000 /* EMC_TRPAB */ + 0x00000006 /* EMC_TCLKSTABLE */ + 0x00000007 /* EMC_TCLKSTOP */ + 0x00001453 /* EMC_TREFBW */ + 0x0000000b /* EMC_QUSE_EXTRA */ + 0x00000006 /* EMC_FBIO_CFG6 */ + 0x00000000 /* EMC_ODT_WRITE */ + 0x00000000 /* EMC_ODT_READ */ + 0x00005088 /* EMC_FBIO_CFG5 */ + 0xf00b0191 /* EMC_CFG_DIG_DLL */ + 0x00008000 /* EMC_CFG_DIG_DLL_PERIOD */ + 0x00000008 /* EMC_DLL_XFORM_DQS0 */ + 0x00000008 /* EMC_DLL_XFORM_DQS1 */ + 0x00000008 /* EMC_DLL_XFORM_DQS2 */ + 0x00000008 /* EMC_DLL_XFORM_DQS3 */ + 0x0000000a /* EMC_DLL_XFORM_DQS4 */ + 0x0000000a /* EMC_DLL_XFORM_DQS5 */ + 0x0000000a /* EMC_DLL_XFORM_DQS6 */ + 0x0000000a /* EMC_DLL_XFORM_DQS7 */ + 0x00018000 /* EMC_DLL_XFORM_QUSE0 */ + 0x00018000 /* EMC_DLL_XFORM_QUSE1 */ + 0x00018000 /* EMC_DLL_XFORM_QUSE2 */ + 0x00018000 /* EMC_DLL_XFORM_QUSE3 */ + 0x00000000 /* EMC_DLL_XFORM_QUSE4 */ + 0x00000000 /* EMC_DLL_XFORM_QUSE5 */ + 0x00000000 /* EMC_DLL_XFORM_QUSE6 */ + 0x00000000 /* EMC_DLL_XFORM_QUSE7 */ + 0x00000000 /* EMC_DLI_TRIM_TXDQS0 */ + 0x00000000 /* EMC_DLI_TRIM_TXDQS1 */ + 0x00000000 /* EMC_DLI_TRIM_TXDQS2 */ + 0x00000000 /* EMC_DLI_TRIM_TXDQS3 */ + 0x00000000 /* EMC_DLI_TRIM_TXDQS4 */ + 0x00000000 /* EMC_DLI_TRIM_TXDQS5 */ + 0x00000000 /* EMC_DLI_TRIM_TXDQS6 */ + 0x00000000 /* EMC_DLI_TRIM_TXDQS7 */ + 0x0000000a /* EMC_DLL_XFORM_DQ0 */ + 0x0000000a /* EMC_DLL_XFORM_DQ1 */ + 0x0000000a /* EMC_DLL_XFORM_DQ2 */ + 0x0000000a /* EMC_DLL_XFORM_DQ3 */ + 0x000002a0 /* EMC_XM2CMDPADCTRL */ + 0x0800013d /* EMC_XM2DQSPADCTRL2 */ + 0x22220000 /* EMC_XM2DQPADCTRL2 */ + 0x77fff884 /* EMC_XM2CLKPADCTRL */ + 0x01f1f501 /* EMC_XM2COMPPADCTRL */ + 0x07077404 /* EMC_XM2VTTGENPADCTRL */ + 0x54000000 /* EMC_XM2VTTGENPADCTRL2 */ + 0x080001e8 /* EMC_XM2QUSEPADCTRL */ + 0x0c000021 /* EMC_XM2DQSPADCTRL3 */ + 0x00000802 /* EMC_CTT_TERM_CTRL */ + 0x00020000 /* EMC_ZCAL_INTERVAL */ + 0x00000100 /* EMC_ZCAL_WAIT_CNT */ + 0x0155000c /* EMC_MRS_WAIT_CNT */ + 0xa0f10000 /* EMC_AUTO_CAL_CONFIG */ + 0x00000000 /* EMC_CTT */ + 0x00000000 /* EMC_CTT_DURATION */ + 0x800028a5 /* EMC_DYN_SELF_REF_CONTROL */ + 0xe8000000 /* EMC_FBIO_SPARE */ + 0xff00ff49 /* EMC_CFG_RSV */ + >; + }; + }; + };