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powerpc/microwatt: Device-tree updates

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Microwatt now implements ISA v3.1 (SFFS compliancy subset), including
prefixed instructions, scv/rfscv, and the FSCR, HFSCR, TAR, and CTRL
registers.  The privileged mode of operation is now hypervisor mode
and there is no privileged non-hypervisor mode; the MSR[HV] bit is
forced to 1.

Besides updating the ibm,powerpc-cpu-features property to reflect the
above, this also makes the following changes relating to peripheral
devices:

- Add gpio controller.
- Remove high-speed property from SD controller, for the case where
  the interface is connected through 200 ohm protection resisters.
- Put an alias for the ethernet in /chosen.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Acked-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/Z5xtdGSacrWz7swi@thinks.paulus.ozlabs.org
This commit is contained in:
Paul Mackerras 2025-01-31 17:28:04 +11:00 committed by Madhavan Srinivasan
parent 81bb6490b7
commit 78099fe1e3
1 changed files with 62 additions and 11 deletions
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73
arch/powerpc/boot/dts/microwatt.dts
View File

@ -1,4 +1,5 @@
/dts-v1/;
#include <dt-bindings/gpio/gpio.h>
/ {
#size-cells = <0x02>;
@ -8,6 +9,7 @@ / {
aliases {
serial0 = &UART0;
ethernet = &enet0;
};
reserved-memory {
@ -35,40 +37,79 @@ cpus {
ibm,powerpc-cpu-features {
display-name = "Microwatt";
isa = <3000>;
isa = <3010>;
device_type = "cpu-features";
compatible = "ibm,powerpc-cpu-features";
mmu-radix {
isa = <3000>;
usable-privilege = <2>;
usable-privilege = <6>;
os-support = <0>;
};
little-endian {
isa = <2050>;
usable-privilege = <3>;
isa = <0>;
usable-privilege = <7>;
os-support = <0>;
hwcap-bit-nr = <1>;
};
cache-inhibited-large-page {
isa = <2040>;
usable-privilege = <2>;
isa = <0>;
usable-privilege = <6>;
os-support = <0>;
};
fixed-point-v3 {
isa = <3000>;
usable-privilege = <3>;
usable-privilege = <7>;
};
no-execute {
isa = <2010>;
isa = <0x00>;
usable-privilege = <2>;
os-support = <0>;
};
floating-point {
hfscr-bit-nr = <0>;
hwcap-bit-nr = <27>;
isa = <0>;
usable-privilege = <3>;
usable-privilege = <7>;
hv-support = <1>;
os-support = <0>;
};
prefixed-instructions {
hfscr-bit-nr = <13>;
fscr-bit-nr = <13>;
isa = <3010>;
usable-privilege = <7>;
os-support = <1>;
hv-support = <1>;
};
tar {
hfscr-bit-nr = <8>;
fscr-bit-nr = <8>;
isa = <2070>;
usable-privilege = <7>;
os-support = <1>;
hv-support = <1>;
hwcap-bit-nr = <58>;
};
control-register {
isa = <0>;
usable-privilege = <7>;
};
system-call-vectored {
isa = <3000>;
usable-privilege = <7>;
os-support = <1>;
fscr-bit-nr = <12>;
hwcap-bit-nr = <52>;
};
};
@ -138,7 +179,18 @@ UART0: serial@2000 {
interrupts = <0x10 0x1>;
};
ethernet@8020000 {
gpio: gpio@7000 {
device_type = "gpio";
compatible = "faraday,ftgpio010";
gpio-controller;
#gpio-cells = <2>;
reg = <0x7000 0x80>;
interrupts = <0x14 1>;
interrupt-controller;
#interrupt-cells = <2>;
};
enet0: ethernet@8020000 {
compatible = "litex,liteeth";
reg = <0x8021000 0x100
0x8020800 0x100
@ -160,7 +212,6 @@ mmc@8040000 {
reg-names = "phy", "core", "reader", "writer", "irq";
bus-width = <4>;
interrupts = <0x13 1>;
cap-sd-highspeed;
clocks = <&sys_clk>;
};
};