| Message ID | 20231002113441.19571-1-wsa+renesas@sang-engineering.com (mailing list archive) |
|---|---|
| State | Rejected |
| Delegated to: | Geert Uytterhoeven |
| Headers | show |
| Series | [RESEND] arm64: dts: renesas: r8a77990: Add Ebisu-4D board support | expand |
Hi Wolfram, On Mon, Oct 2, 2023 at 1:35 PM Wolfram Sang <wsa+renesas@sang-engineering.com> wrote: > From: Takeshi Kihara <takeshi.kihara.df@renesas.com> > > Add initial support for the Renesas Ebisu-4D development board. > > The Ebisu-4D board is very similar to the Ebisu board, but the memory > configuration is different. > > - The memory map of Ebisu-4D board is as follows: > Bank0: 2 GiB RAM : 0x000048000000 -> 0x000bfffffff > > - The memory map of Ebisu board is as follows: > Bank0: 1 GiB RAM : 0x000048000000 -> 0x0007fffffff > > Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com> > Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> > [wsa: rebased] > Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Thanks for your patch! > Resending this patch because I want to utilize all 2GB of memory on my > Ebisu. Since nobody updated U-Boot to handle different RAM sizes on > Ebisu in the last 4.5 years, let's add the Ebisu-4D as a seperate board. This patch is not needed: TF-A passes the memory size to U-Boot, which updates the /memory node in the DTB passed to Linux: $ dtc -O ebisu/r8a77990-ebisu.dtb | grep -A2 -w memory memory@48000000 { device_type = "memory"; reg = <0x00 0x48000000 0x00 0x38000000>; }; When booting: NOTICE: BL2: R-Car Gen3 Initial Program Loader(CA53) Rev.3.0.3 NOTICE: BL2: PRR is R-Car E3 Ver.1.0 NOTICE: BL2: PLL1 nonSSCG Clock select NOTICE: BL2: Board is Ebisu-4D Rev.1.0 ... NOTICE: BL2: CH0: 400000000 - 47fffffff, 2 GiB .. U-Boot 2022.04-rc4-00082-g54082b91f22f7a49 (Mar 25 2022 - 11:25:09 +0100) CPU: Renesas Electronics R8A77990 rev 1.0 Model: Renesas Ebisu-4D board rev 1.0 DRAM: 1.9 GiB ... Booting Linux on physical CPU 0x0000000000 [0x410fd034] Linux version 6.6.0-rc3-ebisu-03722-g180199a69b82 (geert@rox) (aarch64-linux-gnu-gcc (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0, GNU ld (GNU Binutils for Ubuntu) 2.38) #546 SMP Tue Sep 26 13:26:12 CEST 2023 Machine model: Renesas Ebisu board based on r8a77990 printk: debug: ignoring loglevel setting. efi: UEFI not found. Zone ranges: DMA [mem 0x0000000048000000-0x00000000bfffffff] ... Memory: 1755932K/1966080K available (9088K kernel code, 2496K rwdata, 4188K rodata, 3072K init, 17571K bss, 144612K reserved, 65536K cma-reserved) root@ebisu:~# hd /sys/firmware/devicetree/base/memory@48000000/reg 00000000 00 00 00 00 48 00 00 00 00 00 00 00 78 00 00 00 |....H.......x...| 00000010 Gr{oetje,eeting}s, Geert
diff --git a/arch/arm64/boot/dts/renesas/Makefile b/arch/arm64/boot/dts/renesas/Makefile index 7114cbbd8713..ad8f13f9907a 100644 --- a/arch/arm64/boot/dts/renesas/Makefile +++ b/arch/arm64/boot/dts/renesas/Makefile @@ -55,6 +55,7 @@ dtb-$(CONFIG_ARCH_R8A77980) += r8a77980-v3hsk.dtb dtb-$(CONFIG_ARCH_R8A77980) += r8a77980a-condor-i.dtb dtb-$(CONFIG_ARCH_R8A77990) += r8a77990-ebisu.dtb +dtb-$(CONFIG_ARCH_R8A77990) += r8a77990-ebisu-4d.dtb dtb-$(CONFIG_ARCH_R8A77995) += r8a77995-draak.dtb diff --git a/arch/arm64/boot/dts/renesas/r8a77990-ebisu-4d.dts b/arch/arm64/boot/dts/renesas/r8a77990-ebisu-4d.dts new file mode 100644 index 000000000000..9f5bc7a7734f --- /dev/null +++ b/arch/arm64/boot/dts/renesas/r8a77990-ebisu-4d.dts @@ -0,0 +1,25 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Device Tree Source for the Ebisu-4D board + * + * Copyright (C) 2018 Renesas Electronics Corp. + */ + +/dts-v1/; +#include "r8a77990-ebisu.dts" + +/ { + model = "Renesas Ebisu-4D board based on r8a77990"; + compatible = "renesas,ebisu", "renesas,r8a77990"; + + memory@48000000 { + device_type = "memory"; + /* first 128MB is reserved for secure area. */ + reg = <0x0 0x48000000 0x0 0x78000000>; + }; +}; + +&pciec0 { + /* Map all possible DDR as inbound ranges */ + dma-ranges = <0x42000000 0 0x40000000 0 0x40000000 0 0x80000000>; +};