In the v2022.10 Icicle reference design, the seg registers are going to be 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>; };
- 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>; status = "okay"; }; + + reserved-memory { + #address-cells = <2>; + #size-cells = <2>; + ranges; + + hss_payload: region@BFC00000 { + reg = <0x0 0xBFC00000 0x0 0x400000>; + no-map; + }; + }; };
&uart1 {