[PATCH V3] ARM: rmobile: beacon-renesom: Enable QSPI NOR Flash

[Adam Ford]

On Tue, Aug 24, 2021 at 1:04 PM Marek Vasut <marex at denx.de> wrote:
>
> On 8/24/21 6:05 PM, Adam Ford wrote:
> > There is a QSPI NOR flash part on the board.  Because this chip isn't
> > yet supported in Linux, but it is supported in U-Boot, and the
> > face that the RPC_SPI compatible names are different in U-Boot and
> > Linux, the device tree updates are confined to -u-boot.dtsi files.
> >
> > In order to use the QSPI, TF-A must leave RPC unlocked by compiling
> > TF-A with RZG_RPC_HYPERFLASH_LOCKED=0.
> >
> > Signed-off-by: Adam Ford <aford173 at gmail.com>
> > Reviewed-by: Biju Bas <biju.das.jz at bp.renesas.com>
> > ---
> > V3:  Rebase, and combine into som.dsti file
> > V2:  Add note to commit message about TF-A
> >       No functional changes
> >
> > diff --git a/arch/arm/dts/beacon-renesom-som.dtsi b/arch/arm/dts/beacon-renesom-som.dtsi
> > index 9565495b49..d30bab3c8b 100644
> > --- a/arch/arm/dts/beacon-renesom-som.dtsi
> > +++ b/arch/arm/dts/beacon-renesom-som.dtsi
> > @@ -7,6 +7,10 @@
> >   #include <dt-bindings/clk/versaclock.h>
> >
> >   / {
> > +     aliases {
> > +             spi0 = &rpc;
> > +     };
> > +
> >       memory at 48000000 {
> >               device_type = "memory";
> >               /* first 128MB is reserved for secure area. */
> > @@ -275,6 +279,25 @@
> >       };
> >   };
> >
> > +&rpc {
> > +     compatible = "renesas,rcar-gen3-rpc";
> > +     num-cs = <1>;
> > +     spi-max-frequency = <40000000>;
> > +     #address-cells = <1>;
> > +     #size-cells = <0>;
> > +     status = "okay";
> > +
> > +     flash0: spi-flash at 0 {
> > +             #address-cells = <1>;
> > +             #size-cells = <1>;
> > +             reg = <0>;
> > +             compatible = "spi-flash", "jedec,spi-nor";
> > +             spi-max-frequency = <40000000>;
> > +             spi-tx-bus-width = <1>;
> > +             spi-rx-bus-width = <1>;
> > +     };
> > +};
> > +
> >   &scif_clk {
> >       clock-frequency = <14745600>;
> >   };
> > diff --git a/configs/r8a774a1_beacon_defconfig b/configs/r8a774a1_beacon_defconfig
> > index 23c423060d..7ba4ac05f5 100644
> > --- a/configs/r8a774a1_beacon_defconfig
> > +++ b/configs/r8a774a1_beacon_defconfig
> > @@ -18,7 +18,9 @@ CONFIG_CMD_BOOTZ=y
> >   CONFIG_CMD_GPIO=y
> >   CONFIG_CMD_I2C=y
> >   CONFIG_CMD_MMC=y
> > +CONFIG_CMD_MTD=y
> >   CONFIG_CMD_PART=y
> > +CONFIG_CMD_SPI=y
> >   CONFIG_CMD_USB=y
> >   CONFIG_CMD_DHCP=y
> >   CONFIG_CMD_MII=y
> > @@ -47,6 +49,10 @@ CONFIG_MMC_IO_VOLTAGE=y
> >   CONFIG_MMC_UHS_SUPPORT=y
> >   CONFIG_MMC_HS200_SUPPORT=y
> >   CONFIG_RENESAS_SDHI=y
> > +CONFIG_MTD=y
> > +CONFIG_DM_MTD=y
> > +CONFIG_DM_SPI_FLASH=y
> > +CONFIG_SPI_FLASH_WINBOND=y
>
> Applied, but see my comment regarding all those duplicate config options
> under [PATCH 1/2] ARM: rmobile: beacon-renesom: Enable USB and ethernet
> ref clocks

what repo do you use? i am not sure where to look.  i want to add more
stuff, but i want to make sure i have the proper starting point.

thanks,
adam