[PATCH v3 9/9] ARM: renesas: Add RZ/A2 RZA2MBTC board support
Magnus Damm
damm at opensource.se
Sun Jul 6 13:29:45 CEST 2025
From: Magnus Damm <damm at opensource.se>
Add initial RZ/A2 RZA2MBTC board support. Serial console, SPI Flash and
Ethernet are known to work however on-board SDRAM is not yet enabled.
Signed-off-by: Magnus Damm <damm at opensource.se>
---
Changes since v2:
- new patch
Please pick DT board file from the following patch in series:
[PATCH 6/6] ARM: dts: renesas: rza2mbtc: initial board support
https://patchwork.kernel.org/project/linux-renesas-soc/list/?series=979368
Makefile | 2 +
arch/arm/dts/Makefile | 3 +-
arch/arm/dts/r7s9210-rza2mbtc-u-boot.dtsi | 28 +++++++++++++++++++++++
arch/arm/mach-renesas/Kconfig.rza2 | 4 +++
board/aprg/rza2mbtc/Kconfig | 15 ++++++++++++
board/aprg/rza2mbtc/MAINTAINERS | 5 ++++
board/aprg/rza2mbtc/Makefile | 1
board/aprg/rza2mbtc/rza2mbtc.c | 34 +++++++++++++++++++++++++++++
configs/rza2mbtc_defconfig | 17 ++++++++++++++
include/configs/rza2mbtc.h | 27 +++++++++++++++++++++++
10 files changed, 135 insertions(+), 1 deletion(-)
--- 0013/Makefile
+++ work/Makefile 2025-07-05 19:47:10.480068691 +0900
@@ -868,9 +868,11 @@ c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
# U-Boot objects....order is important (i.e. start must be first)
HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n)
+HAVE_SOC_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(SOC)/common/Makefile),y,n)
libs-$(CONFIG_API) += api/
libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
+libs-$(HAVE_SOC_COMMON_LIB) += board/$(SOC)/common/
libs-y += boot/
libs-$(CONFIG_CMDLINE) += cmd/
libs-y += common/
--- 0021/arch/arm/dts/Makefile
+++ work/arch/arm/dts/Makefile 2025-07-05 19:47:10.480068691 +0900
@@ -928,7 +928,8 @@ dtb-$(CONFIG_RZA1) += \
r7s72100-gr-peach.dtb
dtb-$(CONFIG_RZA2) += \
- r7s9210-gr-mango.dtb
+ r7s9210-gr-mango.dtb \
+ r7s9210-rza2mbtc.dtb
dtb-$(CONFIG_TARGET_AT91SAM9261EK) += at91sam9261ek.dtb
--- /dev/null
+++ work/arch/arm/dts/r7s9210-rza2mbtc-u-boot.dtsi 2025-07-05 19:57:05.029546662 +0900
@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source extras for U-Boot for the RZ/A2M BTC board
+ * Based on GR Peach, Copyright (C) 2019 Marek Vasut <marek.vasut at gmail.com>
+ */
+
+/ {
+ soc {
+ bootph-all;
+ };
+};
+
+&ostm0 {
+ bootph-all;
+};
+
+&pinctrl {
+ bootph-all;
+};
+
+&scif1 {
+ bootph-all;
+ clock = <66666666>; /* ToDo: Replace by DM clock driver */
+};
+
+&scif1_pins {
+ bootph-all;
+};
--- 0021/arch/arm/mach-renesas/Kconfig.rza2
+++ work/arch/arm/mach-renesas/Kconfig.rza2 2025-07-05 19:47:10.480068691 +0900
@@ -11,10 +11,14 @@ choice
config TARGET_GRMANGO
bool "GR-MANGO board"
+config TARGET_RZA2MBTC
+ bool "RZA2MBTC board"
+
endchoice
# Renesas Supported Boards
source "board/renesas/grmango/Kconfig"
+source "board/aprg/rza2mbtc/Kconfig"
endif
--- /dev/null
+++ work/board/aprg/rza2mbtc/Kconfig 2025-07-05 19:47:11.525074804 +0900
@@ -0,0 +1,15 @@
+if TARGET_RZA2MBTC
+
+config SYS_SOC
+ default "renesas"
+
+config SYS_BOARD
+ default "rza2mbtc"
+
+config SYS_VENDOR
+ default "aprg"
+
+config SYS_CONFIG_NAME
+ default "rza2mbtc"
+
+endif
--- /dev/null
+++ work/board/aprg/rza2mbtc/MAINTAINERS 2025-07-05 19:47:11.532074845 +0900
@@ -0,0 +1,5 @@
+RZA2MBTC BOARD
+M: Magnus Damm <damm at opensource.se>
+F: arch/arm/dts/r7s9210*
+F: board/aprg/rza2mbtc/
+N: rza2mbtc
--- /dev/null
+++ work/board/aprg/rza2mbtc/Makefile 2025-07-05 19:47:11.539074886 +0900
@@ -0,0 +1 @@
+obj-y := rza2mbtc.o
--- /dev/null
+++ work/board/aprg/rza2mbtc/rza2mbtc.c 2025-07-05 19:48:16.442454560 +0900
@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2017 Renesas Electronics
+ * Copyright (C) Chris Brandt
+ */
+
+#include <init.h>
+#include <asm/global_data.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int board_init(void)
+{
+ gd->bd->bi_boot_params = CFG_SYS_SDRAM_BASE + 0x100;
+ return 0;
+}
+
+/*
+ * Make use of the RZ/A2M on-chip memory which is 4 MiB at CFG_SYS_SDRAM_BASE.
+ */
+
+int dram_init(void)
+{
+ gd->ram_base = CFG_SYS_SDRAM_BASE;
+ gd->ram_size = 4 << 20;
+ return 0;
+}
+
+int dram_init_banksize(void)
+{
+ gd->bd->bi_dram[0].start = gd->ram_base;
+ gd->bd->bi_dram[0].size = gd->ram_size;
+ return 0;
+}
--- /dev/null
+++ work/configs/rza2mbtc_defconfig 2025-07-05 19:47:11.553074968 +0900
@@ -0,0 +1,17 @@
+#include <configs/renesas_rza2.config>
+
+CONFIG_ARM=y
+CONFIG_ARCH_RENESAS=y
+CONFIG_TEXT_BASE=0x00000000
+CONFIG_POSITION_INDEPENDENT=y
+CONFIG_DEFAULT_DEVICE_TREE="renesas/r7s9210-rza2mbtc"
+CONFIG_TARGET_RZA2MBTC=y
+
+CONFIG_DM_SPI_FLASH=y
+CONFIG_ENV_IS_IN_SPI_FLASH=y
+CONFIG_ENV_OFFSET=0xe0000
+CONFIG_ENV_SIZE=0x10000
+CONFIG_ENV_SECT_SIZE=0x10000
+CONFIG_MTD=y
+CONFIG_SPI_FLASH=y
+CONFIG_SPI_FLASH_MACRONIX=y
--- /dev/null
+++ work/include/configs/rza2mbtc.h 2025-07-05 19:47:11.560075010 +0900
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Configuration settings for the Renesas GRMANGO board
+ *
+ * Copyright (C) 2017-2019 Renesas Electronics
+ */
+
+#ifndef __GRMANGO_H
+#define __GRMANGO_H
+
+/* Internal RAM Size */
+/*
+ * u-boot will be relocated to internal RAM during boot.
+ * RZ/A2M = 4MB
+ */
+#define CFG_SYS_SDRAM_BASE 0x80000000
+#define CFG_SYS_SDRAM_SIZE (4 * 1024 * 1024)
+
+/* Network interface */
+#define CFG_SH_ETHER_USE_PORT 1
+#define CFG_SH_ETHER_PHY_ADDR 0
+#define CFG_SH_ETHER_PHY_MODE PHY_INTERFACE_MODE_RMII
+#define CFG_SH_ETHER_CACHE_WRITEBACK
+#define CFG_SH_ETHER_CACHE_INVALIDATE
+#define CFG_SH_ETHER_ALIGNE_SIZE 64
+
+#endif /* __GRMANGO_H */
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