From mboxrd@z Thu Jan 1 00:00:00 1970 From: linus.walleij@linaro.org (Linus Walleij) Date: Tue, 3 Mar 2015 10:32:27 +0100 Subject: [PATCH 4/5] arm64: juno: Add APB registers and LEDs using syscon In-Reply-To: <1425375148-4369-1-git-send-email-linus.walleij@linaro.org> References: <1425375148-4369-1-git-send-email-linus.walleij@linaro.org> Message-ID: <1425375148-4369-5-git-send-email-linus.walleij@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org This defines the Juno "APB system registers" as a syscon device, and all the LEDs controlled by the APB system registers right below it using the syscon LEDs driver on top of syscon. Define LED0 for heartbeat, LED1 for MMC0 activity and the following four LEDs indicating CPU activity using the Linux-specific DT bindings for triggers. This is the pattern and same drivers as used on the legacy platform device trees for the ARM Integrators and the RealView PB1176. Cc: Arnd Bergmann Cc: Liviu Dudau Cc: Mark Rutland Cc: Robin Murphy Cc: Pawel Moll Signed-off-by: Linus Walleij --- ChangeLog v1->v2: - Use "simple-mfd" so that the syscon LEDs get spawned from the syscon as sub-platform devices. --- arch/arm64/boot/dts/arm/juno-motherboard.dtsi | 68 +++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) diff --git a/arch/arm64/boot/dts/arm/juno-motherboard.dtsi b/arch/arm64/boot/dts/arm/juno-motherboard.dtsi index c138b95a8356..5ce111dcf16d 100644 --- a/arch/arm64/boot/dts/arm/juno-motherboard.dtsi +++ b/arch/arm64/boot/dts/arm/juno-motherboard.dtsi @@ -66,6 +66,74 @@ #size-cells = <1>; ranges = <0 3 0 0x200000>; + apbregs at 010000 { + compatible = "syscon", "simple-mfd"; + reg = <0x010000 0x1000>; + + led at 08.0 { + compatible = "register-bit-led"; + offset = <0x08>; + mask = <0x01>; + label = "vexpress:0"; + linux,default-trigger = "heartbeat"; + default-state = "on"; + }; + led at 08.1 { + compatible = "register-bit-led"; + offset = <0x08>; + mask = <0x02>; + label = "vexpress:1"; + linux,default-trigger = "mmc0"; + default-state = "off"; + }; + led at 08.2 { + compatible = "register-bit-led"; + offset = <0x08>; + mask = <0x04>; + label = "vexpress:2"; + linux,default-trigger = "cpu0"; + default-state = "off"; + }; + led at 08.3 { + compatible = "register-bit-led"; + offset = <0x08>; + mask = <0x08>; + label = "vexpress:3"; + linux,default-trigger = "cpu1"; + default-state = "off"; + }; + led at 08.4 { + compatible = "register-bit-led"; + offset = <0x08>; + mask = <0x10>; + label = "vexpress:4"; + linux,default-trigger = "cpu2"; + default-state = "off"; + }; + led at 08.5 { + compatible = "register-bit-led"; + offset = <0x08>; + mask = <0x20>; + label = "vexpress:5"; + linux,default-trigger = "cpu3"; + default-state = "off"; + }; + led at 08.6 { + compatible = "register-bit-led"; + offset = <0x08>; + mask = <0x40>; + label = "vexpress:6"; + default-state = "off"; + }; + led at 08.7 { + compatible = "register-bit-led"; + offset = <0x08>; + mask = <0x80>; + label = "vexpress:7"; + default-state = "off"; + }; + }; + mmci at 050000 { compatible = "arm,pl180", "arm,primecell"; reg = <0x050000 0x1000>; -- 1.9.3