From: sudeep.holla@arm.com (Sudeep Holla)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH REPOST v6 6/8] arm64: dts: add SRAM, MHU mailbox and SCPI support on Juno
Date: Wed, 16 Sep 2015 18:16:37 +0100 [thread overview]
Message-ID: <1442423799-23892-7-git-send-email-sudeep.holla@arm.com> (raw)
In-Reply-To: <1442423799-23892-1-git-send-email-sudeep.holla@arm.com>
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 <sudeep.holla@arm.com>
Acked-by: Liviu Dudau <Liviu.Dudau@arm.com>
Cc: Jon Medhurst (Tixy) <tixy@linaro.org>
---
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 at 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 at 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 at 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 at 0 {
+ compatible = "arm,juno-scp-shmem";
+ reg = <0x0 0x200>;
+ };
+
+ cpu_scp_hpri: scp-shmem at 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 at 0 {
+ compatible = "arm,scpi-dvfs-clocks";
+ #clock-cells = <1>;
+ clock-indices = <0>, <1>, <2>;
+ clock-output-names = "atlclk", "aplclk","gpuclk";
+ };
+ scpi_clk: scpi_clocks at 3 {
+ compatible = "arm,scpi-variable-clocks";
+ #clock-cells = <1>;
+ clock-indices = <3>, <4>;
+ clock-output-names = "pxlclk0", "pxlclk1";
+ };
+ };
+ };
+
/include/ "juno-clocks.dtsi"
dma at 7ff00000 {
--
1.9.1
next prev parent reply other threads:[~2015-09-16 17:16 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-16 17:16 [PATCH REPOST v6 0/8] ARM64: juno: add SCPI mailbox protocol, clock and CPUFreq support Sudeep Holla
2015-09-16 17:16 ` [PATCH REPOST v6 1/8] Documentation: add DT binding for ARM System Control and Power Interface(SCPI) protocol Sudeep Holla
2015-09-16 17:16 ` [PATCH REPOST v6 2/8] firmware: add support " Sudeep Holla
2015-09-16 17:16 ` [PATCH REPOST v6 3/8] clk: add support for clocks provided by SCP(System Control Processor) Sudeep Holla
2015-09-16 17:16 ` [PATCH REPOST v6 4/8] clk: scpi: add support for cpufreq virtual device Sudeep Holla
2015-09-16 17:16 ` [PATCH REPOST v6 5/8] cpufreq: arm_big_little: add SCPI interface driver Sudeep Holla
2015-09-16 17:16 ` Sudeep Holla [this message]
2015-09-16 17:16 ` [PATCH REPOST v6 7/8] arm64: dts: add CPU topology on Juno Sudeep Holla
2015-09-16 17:16 ` [PATCH REPOST v6 8/8] arm64: dts: add clock support for all the cpus Sudeep Holla
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