On Mon, Jun 08, 2015 at 11:40:00AM +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. > > Cc: Liviu Dudau <[email protected]> > Cc: Jon Medhurst (Tixy) <[email protected]> > Signed-off-by: Sudeep Holla <[email protected]> > --- > 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>;
Subject to you addressing Mark's comments regarding the indices values (maybe choose a different property to show the fact that the index is actually an SCPI index rather than the clock's), you can add my Acked-by: Liviu Dudau <[email protected]> Best regards, Liviu > + clock-output-names = "pxlclk0", "pxlclk1"; > + }; > + }; > + }; > -- > 1.9.1 > -- ==================== | I would like to | | fix the world, | | but they're not | | giving me the | \ source code! / --------------- ¯\_(ツ)_/¯ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
