Commit 78099fe1 authored by Paul Mackerras's avatar Paul Mackerras Committed by Madhavan Srinivasan
Browse files

powerpc/microwatt: Device-tree updates 



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: default avatarPaul Mackerras <paulus@ozlabs.org>
Acked-by: default avatarNicholas Piggin <npiggin@gmail.com>
Signed-off-by: default avatarMadhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/Z5xtdGSacrWz7swi@thinks.paulus.ozlabs.org
parent 81bb6490

arch/powerpc/boot/dts/microwatt.dts

+62 −11
Original line number Diff line number Diff line 
/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>;

		};

	};