On Fri, Jul 31, 2015 at 06:43:09PM +0100, Sudeep Holla wrote:
> This patch adds support for the MHU mailbox peripheral used on Juno by
> application processors to communicate with remote SCP handling most of
> the CPU/system power management. It also adds the SRAM reserving the
> shared memory and SCPI message protocol using that shared memory.
>
> Signed-off-by: Sudeep Holla <[email protected]>
> Acked-by: Liviu Dudau <[email protected]>
> Cc: Jon Medhurst (Tixy) <[email protected]>
> ---
> arch/arm64/boot/dts/arm/juno-base.dtsi | 54
> ++++++++++++++++++++++++++++++++++
> 1 file changed, 54 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/arm/juno-base.dtsi
> b/arch/arm64/boot/dts/arm/juno-base.dtsi
> index e3ee96036eca..c624208edef6 100644
> --- a/arch/arm64/boot/dts/arm/juno-base.dtsi
> +++ b/arch/arm64/boot/dts/arm/juno-base.dtsi
> @@ -17,6 +17,18 @@
> };
> };
>
> + mailbox: mhu@2b1f0000 {
> + compatible = "arm,mhu", "arm,primecell";
> + reg = <0x0 0x2b1f0000 0x0 0x1000>;
> + interrupts = <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>;
> + interrupt-names = "mhu_lpri_rx",
> + "mhu_hpri_rx";
> + #mbox-cells = <1>;
> + clocks = <&soc_refclk100mhz>;
> + clock-names = "apb_pclk";
> + };
> +
> gic: interrupt-controller@2c010000 {
> compatible = "arm,gic-400", "arm,cortex-a15-gic";
> reg = <0x0 0x2c010000 0 0x1000>,
> @@ -44,6 +56,48 @@
> <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(6) |
> IRQ_TYPE_LEVEL_LOW)>;
> };
>
> + sram: sram@2e000000 {
> + compatible = "arm,juno-sram-ns", "mmio-sram";
> + reg = <0x0 0x2e000000 0x0 0x8000>;
> +
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges = <0 0x0 0x2e000000 0x8000>;
> +
> + cpu_scp_lpri: scp-shmem@0 {
> + compatible = "arm,juno-scp-shmem";
> + reg = <0x0 0x200>;
> + };
> +
> + cpu_scp_hpri: scp-shmem@200 {
> + compatible = "arm,juno-scp-shmem";
> + reg = <0x200 0x200>;
> + };
> + };
> +
> + scpi {
> + compatible = "arm,scpi";
> + mboxes = <&mailbox 1>;
> + shmem = <&cpu_scp_hpri>;
> +
> + clocks {
> + compatible = "arm,scpi-clocks";
> +
> + scpi_dvfs: scpi_clocks@0 {
> + compatible = "arm,scpi-dvfs-clocks";
> + #clock-cells = <1>;
> + clock-indices = <0>, <1>, <2>;
> + clock-output-names = "atlclk",
> "aplclk","gpuclk";
> + };
> + scpi_clk: scpi_clocks@3 {
> + compatible = "arm,scpi-variable-clocks";
> + #clock-cells = <1>;
> + clock-indices = <3>, <4>;
> + clock-output-names = "pxlclk0", "pxlclk1";
> + };
> + };
> + };
> +
Sorry for noticing this after the ACK, is there any reason why the scpi node is
not inside
the juno-clocks.dtsi file?
Best regards,
Liviu
> /include/ "juno-clocks.dtsi"
>
> dma@7ff00000 {
> --
> 1.9.1
>
--
====================
| I would like to |
| fix the world, |
| but they're not |
| giving me the |
\ source code! /
---------------
¯\_(ツ)_/¯
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