[RFC PATCH 4/5] arm64: dts: sunxi: add SCPI driven clocks and nodes for A64 MMC

[Icenowy Zheng]

09.08.2016, 19:58, "Andre Przywara" <andre.przywara at arm.com>:
>  The MMC controllers in the Allwinner A64 SoC are somewhat compatible
>  with the versions used in other Allwinner SoCs.
>  Tell Linux about the three MMC clocks that the firmware implements and
>  add nodes to represent the MMC controllers.
>  The actual hardware is capable of new transfer modes, which the driver
>  does not fully support yet, also the clock part has changed, but it
>  works like this at least for SD card accesses.
>
>  Signed-off-by: Andre Przywara <andre.przywara at arm.com>
>  ---
>   arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 61 +++++++++++++++++++++++++++
>   1 file changed, 61 insertions(+)
>
>  diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
>  index 9fc540e..0f6044b 100644
>  --- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
>  +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
>  @@ -157,6 +157,19 @@
>                   compatible = "arm,scpi";
>                   mboxes = <&mailbox 0>;
>                   shmem = <&cpu_scp_mem>;
>  +
>  + clocks {
>  + compatible = "arm,scpi-clocks";
>  +
>  + scpi_clk: scpi_clocks {
>  + compatible = "arm,scpi-variable-clocks";
>  + #clock-cells = <1>;
>  + clock-indices = <0>, <1>,


I found a problem of the "standardize" process.
There cannot be an authority to keep the clock ID standardized, in both 

>  + <2>;
>  + clock-output-names = "mmc0_clk", "mmc1_clk",
>  + "mmc2_clk";
>  + };
>  + };
>           };
>
>           soc {
>  @@ -165,6 +178,54 @@
>                   #size-cells = <1>;
>                   ranges;
>
>  + mmc0: mmc at 1c0f000 {
>  + compatible = "allwinner,sun50i-a64-mmc",
>  + "allwinner,sun5i-a13-mmc";
>  + reg = <0x01c0f000 0x1000>;
>  + clocks = <&bus_gates 8>, <&scpi_clk 0>,
>  + <&scpi_clk 0>, <&scpi_clk 0>;
>  + clock-names = "ahb", "mmc",
>  + "output", "sample";
>  + resets = <&ahb_rst 8>;
>  + reset-names = "ahb";
>  + interrupts = <GIC_SPI 60 IRQ_TYPE_LEVEL_HIGH>;
>  + status = "disabled";
>  + #address-cells = <1>;
>  + #size-cells = <0>;
>  + };
>  +
>  + mmc1: mmc at 1c10000 {
>  + compatible = "allwinner,sun50i-a64-mmc",
>  + "allwinner,sun5i-a13-mmc";
>  + reg = <0x01c10000 0x1000>;
>  + clocks = <&bus_gates 9>, <&scpi_clk 1>,
>  + <&scpi_clk 1>, <&scpi_clk 1>;
>  + clock-names = "ahb", "mmc",
>  + "output", "sample";
>  + resets = <&ahb_rst 9>;
>  + reset-names = "ahb";
>  + interrupts = <GIC_SPI 61 IRQ_TYPE_LEVEL_HIGH>;
>  + status = "disabled";
>  + #address-cells = <1>;
>  + #size-cells = <0>;
>  + };
>  +
>  + mmc2: mmc at 1c11000 {
>  + compatible = "allwinner,sun50i-a64-mmc",
>  + "allwinner,sun5i-a13-mmc";
>  + reg = <0x01c11000 0x1000>;
>  + clocks = <&bus_gates 10>, <&scpi_clk 2>,
>  + <&scpi_clk 2>, <&scpi_clk 2>;
>  + clock-names = "ahb", "mmc",
>  + "output", "sample";
>  + resets = <&ahb_rst 10>;
>  + reset-names = "ahb";
>  + interrupts = <GIC_SPI 62 IRQ_TYPE_LEVEL_HIGH>;
>  + status = "disabled";
>  + #address-cells = <1>;
>  + #size-cells = <0>;
>  + };
>  +
>                   pio: pinctrl at 1c20800 {
>                           compatible = "allwinner,sun50i-a64-pinctrl";
>                           reg = <0x01c20800 0x400>;
>  --
>  2.9.0
>
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