Hi Magnus,
On Sat, 5 Jul 2025 at 21:09, Magnus Damm <damm@xxxxxxxxxxxxx> wrote:
> From: Magnus Damm <damm@xxxxxxxxxxxxx>
>
> Add genmai board support code to make use of one of the on-chip rpc-if devices
> to interface to the on-board SPI flash U6 Spansion S25FK512S-16. Without this
> patch the SPI flash is accessible through a memory mapped window, however by
> adding pinctrl configuration and a rpc-if device node to the DTS we can now
> access the SPI flash via the the rpc-if driver instead.
>
> Signed-off-by: Magnus Damm <damm@xxxxxxxxxxxxx>
Thanks for your patch!
> --- 0001/arch/arm/boot/dts/renesas/r7s72100-genmai.dts
> +++ work/arch/arm/boot/dts/renesas/r7s72100-genmai.dts 2025-07-06 00:02:33.267119292 +0900
> @@ -18,6 +18,7 @@
>
> aliases {
> serial0 = &scif2;
> + spi0 = &rpc0;
I don't think you need this/
> };
>
> chosen {
> @@ -25,35 +26,6 @@
> stdout-path = "serial0:115200n8";
> };
>
> - flash@18000000 {
> - compatible = "mtd-rom";
> - reg = <0x18000000 0x08000000>;
> - bank-width = <4>;
> - device-width = <1>;
> -
> - clocks = <&mstp9_clks R7S72100_CLK_SPIBSC0>;
> - power-domains = <&cpg_clocks>;
> -
> - #address-cells = <1>;
> - #size-cells = <1>;
> -
> - partitions {
> - compatible = "fixed-partitions";
> - #address-cells = <1>;
> - #size-cells = <1>;
> -
> - partition@0 {
> - label = "user";
> - reg = <0x00000000 0x04000000>;
> - };
> -
> - partition@4000000 {
> - label = "user1";
> - reg = <0x04000000 0x04000000>;
> - };
> - };
> - };
> -
Removing this breaks the direct-mapped FLASH ROM, which may affect
userspace, and prevents using XIP (but I understand no one cares about
the latter anymore).
> keyboard {
> compatible = "gpio-keys";
>
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
