On Fri, Oct 21, 2022 at 12:29:19PM +0530, Padmarao Begari wrote:
In the v2022.10 Icicle reference design, the seg registers are going to be
Hey Padmarao, Since the release was done the other day I think that this should be s/are going to be/have been
changed, resulting in a required change to the memory map. A small 4MB reservation is made at the end of 32-bit DDR to provide some memory for the HSS to use, so that it can cache its payload between reboots of a specific context.
Co-developed-by: Conor Dooley conor.dooley@microchip.com Signed-off-by: Conor Dooley conor.dooley@microchip.com Signed-off-by: Padmarao Begari padmarao.begari@microchip.com Reviewed-by: Conor Dooley conor.dooley@microchip.com
arch/riscv/dts/microchip-mpfs-icicle-kit.dts | 70 ++++---------------- 1 file changed, 14 insertions(+), 56 deletions(-)
diff --git a/arch/riscv/dts/microchip-mpfs-icicle-kit.dts b/arch/riscv/dts/microchip-mpfs-icicle-kit.dts index 287ef3d23b..876c475069 100644 --- a/arch/riscv/dts/microchip-mpfs-icicle-kit.dts +++ b/arch/riscv/dts/microchip-mpfs-icicle-kit.dts @@ -1,6 +1,6 @@ // SPDX-License-Identifier: (GPL-2.0+ OR MIT) /*
- Copyright (C) 2021 Microchip Technology Inc.
*/
- Copyright (C) 2021-2022 Microchip Technology Inc.
- Padmarao Begari padmarao.begari@microchip.com
@@ -28,70 +28,28 @@ timebase-frequency = <RTCCLK_FREQ>; };
FWIW I think we should add the compatible that the linux dt has, signifying that this memory layout is compatible with the v2022.10 release and later (w/ appropriate line-wrapping ofc): compatible = "microchip,mpfs-icicle-reference-rtlv2210", "microchip,mpfs-icicle-kit", "microchip,mpfs";
Other than that: Reviewed-by: Conor Dooley conor.dooley@microchip.com
- reserved-memory {
ranges;#size-cells = <2>;#address-cells = <2>;fabricbuf0: fabricbuf@0 {compatible = "shared-dma-pool";reg = <0x0 0xae000000 0x0 0x2000000>;label = "fabricbuf0-ddr-c";};fabricbuf1: fabricbuf@1 {compatible = "shared-dma-pool";reg = <0x0 0xc0000000 0x0 0x8000000>;label = "fabricbuf1-ddr-nc";};fabricbuf2: fabricbuf@2 {compatible = "shared-dma-pool";reg = <0x0 0xd8000000 0x0 0x8000000>;label = "fabricbuf2-ddr-nc-wcb";};- };
- udmabuf0 {
compatible = "ikwzm,u-dma-buf";device-name = "udmabuf-ddr-c0";minor-number = <0>;size = <0x0 0x2000000>;memory-region = <&fabricbuf0>;sync-mode = <3>;- };
- udmabuf1 {
compatible = "ikwzm,u-dma-buf";device-name = "udmabuf-ddr-nc0";minor-number = <1>;size = <0x0 0x8000000>;memory-region = <&fabricbuf1>;sync-mode = <3>;- };
- udmabuf2 {
compatible = "ikwzm,u-dma-buf";device-name = "udmabuf-ddr-nc-wcb0";minor-number = <2>;size = <0x0 0x8000000>;memory-region = <&fabricbuf2>;sync-mode = <3>;- };
- ddrc_cache_lo: memory@80000000 { device_type = "memory";
reg = <0x0 0x80000000 0x0 0x2e000000>;clocks = <&clkcfg CLK_DDRC>;
reg = <0x0 0x80000000 0x0 0x40000000>;status = "okay"; };
ddrc_cache_hi: memory@1000000000 { device_type = "memory";
reg = <0x10 0x0 0x0 0x40000000>;clocks = <&clkcfg CLK_DDRC>;
reg = <0x10 0x40000000 0x0 0x40000000>;- reserved-memory {
#address-cells = <2>;#size-cells = <2>;ranges;hss_payload: region@BFC00000 {reg = <0x0 0xBFC00000 0x0 0x400000>;no-map;};- };
};
&uart1 {
2.25.1