Messages in this thread Patch in this message | | | From | Sudeep Holla <> | Subject | [PATCH v4 6/8] arm64: dts: add SRAM, MHU mailbox and SCPI support on Juno | Date | Mon, 8 Jun 2015 11:40:00 +0100 |
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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.
Cc: Liviu Dudau <Liviu.Dudau@arm.com> Cc: Jon Medhurst (Tixy) <tixy@linaro.org> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> --- arch/arm64/boot/dts/arm/juno-base.dtsi | 31 +++++++++++++++++++++++++++++++ arch/arm64/boot/dts/arm/juno-clocks.dtsi | 23 +++++++++++++++++++++++ 2 files 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..f8069a98da25 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 +56,25 @@ <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>; + }; + }; + /include/ "juno-clocks.dtsi" dma@7ff00000 { diff --git a/arch/arm64/boot/dts/arm/juno-clocks.dtsi b/arch/arm64/boot/dts/arm/juno-clocks.dtsi index 25352ed943e6..64af7370815a 100644 --- a/arch/arm64/boot/dts/arm/juno-clocks.dtsi +++ b/arch/arm64/boot/dts/arm/juno-clocks.dtsi @@ -42,3 +42,26 @@ clock-frequency = <400000000>; clock-output-names = "faxi_clk"; }; + + 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 = "vbig", "vlittle", "vgpu"; + }; + scpi_clk: scpi_clocks@3 { + compatible = "arm,scpi-variable-clocks"; + #clock-cells = <1>; + clock-indices = <3>, <4>; + clock-output-names = "pxlclk0", "pxlclk1"; + }; + }; + }; -- 1.9.1
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