linux-kernel - [PATCH v4 2/4] arm64: dts: rockchip: add GRF GPIO controller to rk3328

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Message-Id: <1533016762-5268-3-git-send-email-djw@t-chip.com.cn>
Date:   Tue, 31 Jul 2018 13:59:20 +0800
From:   djw@...hip.com.cn
To:     linux-rockchip@...ts.infradead.org
Cc:     Wayne Chou <zxf@...hip.com.cn>, Levin Du <djw@...hip.com.cn>,
        Heiko Stuebner <heiko@...ech.de>,
        Simon Xue <xxm@...k-chips.com>,
        David Wu <david.wu@...k-chips.com>,
        Finley Xiao <finley.xiao@...k-chips.com>,
        devicetree@...r.kernel.org,
        Klaus Goger <klaus.goger@...obroma-systems.com>,
        Sugar Zhang <sugar.zhang@...k-chips.com>,
        linux-kernel@...r.kernel.org, Robin Murphy <robin.murphy@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Rocky Hao <rocky.hao@...k-chips.com>,
        Will Deacon <will.deacon@....com>,
        Mark Rutland <mark.rutland@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v4 2/4] arm64: dts: rockchip: add GRF GPIO controller to rk3328

From: Levin Du <djw@...hip.com.cn>

Adding a GRF GPIO controller labled "grf_gpio" to rk3328, currently
providing access to the GPIO_MUTE pin, which is manupulated by the
GRF_SOC_CON10 register.

The GPIO_MUTE pin is referred to as <&grf_gpio 0>.

Signed-off-by: Levin Du <djw@...hip.com.cn>

---

Changes in v4:
- Use binding of "rockchip,rk3328-grf-gpio"

Changes in v3:
- Use dedicated "rockchip,rk3328-gpio-mute" driver

Changes in v2:
- Rename gpio_syscon10 to gpio_mute in rk3328.dtsi

Changes in v1:
- Split from V0 and add to rk3328.dtsi for general use.

 arch/arm64/boot/dts/rockchip/rk3328.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3328.dtsi b/arch/arm64/boot/dts/rockchip/rk3328.dtsi
index 3f5a294..bf5656d 100644
--- a/arch/arm64/boot/dts/rockchip/rk3328.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3328.dtsi
@@ -275,6 +275,12 @@
 			mode-loader = <BOOT_BL_DOWNLOAD>;
 		};
 
+		grf_gpio: grf-gpio {
+			compatible = "rockchip,rk3328-grf-gpio";
+			gpio-controller;
+			#gpio-cells = <2>;
+			status = "disabled";
+		};
 	};
 
 	uart0: serial@...10000 {
-- 
2.7.4