On Thu, Jun 14, 2018 at 9:05 PM, Chen-Yu Tsai <wens@xxxxxxxx> wrote:
> From: Icenowy Zheng <icenowy@xxxxxxx>
>
> Allwinner A64 has a SRAM controller, and in the device tree currently
> we have a syscon node to enable EMAC driver to access the EMAC clock
> register. As SRAM controller driver can now export regmap for this
> register, replace the syscon node to the SRAM controller device node,
> and let EMAC driver to acquire its EMAC clock regmap.
>
> Signed-off-by: Icenowy Zheng <icenowy@xxxxxxx>
> [wens@xxxxxxxx: Updated compatible string]
> Signed-off-by: Chen-Yu Tsai <wens@xxxxxxxx>
> ---
> arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 19 +++++++++++++++++--
> 1 file changed, 17 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
> index 1b2ef28c42bd..87968dafe1dc 100644
> --- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
> +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
> @@ -169,9 +169,24 @@
> ranges;
>
> syscon: syscon@1c00000 {
> - compatible = "allwinner,sun50i-a64-system-controller",
> - "syscon";
> + compatible = "allwinner,sun50i-a64-system-control";
> reg = <0x01c00000 0x1000>;
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges;
> +
> + sram_c: sram@18000 {
> + compatible = "mmio-sram";
> + reg = <0x00018000 0x28000>;
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges = <0 0x00018000 0x28000>;
> +
> + de2_sram: sram-section@0 {
So, this can attach to display-engine node through allwinner,sram and
add support to claim the sram on sun4i/sun4i_drv.c, correct?
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