linux-kernel - [PATCH 2/4] ARM64: dts: meson-gxbb: Add Wifi 32K clock for p20x boards

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Message-Id: <1476963777-1804-3-git-send-email-narmstrong@baylibre.com>
Date:   Thu, 20 Oct 2016 13:42:55 +0200
From:   Neil Armstrong <narmstrong@...libre.com>
To:     carlo@...one.org, khilman@...libre.com
Cc:     Neil Armstrong <narmstrong@...libre.com>,
        linux-amlogic@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: [PATCH 2/4] ARM64: dts: meson-gxbb: Add Wifi 32K clock for p20x boards

Add a 32768Hz clock generated by the PWM E port used by the WiFi module.

Signed-off-by: Neil Armstrong <narmstrong@...libre.com>
---
 arch/arm64/boot/dts/amlogic/meson-gxbb-p20x.dtsi | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-p20x.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxbb-p20x.dtsi
index 86e740f..6861b0a 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb-p20x.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-p20x.dtsi
@@ -111,6 +111,13 @@
 		compatible = "mmc-pwrseq-emmc";
 		reset-gpios = <&gpio BOOT_9 GPIO_ACTIVE_LOW>;
 	};
+
+	wifi32k: wifi32k {
+		compatible = "pwm-clock";
+		#clock-cells = <0>;
+		clock-frequency = <32768>;
+		pwms = <&pwm_ef 0 30518 0>; /* PWM_E at 32.768KHz */
+	};
 };
 
 /* This UART is brought out to the DB9 connector */
@@ -205,3 +212,11 @@
 	vmmc-supply = <&vcc_3v3>;
 	vqmmc-supply = <&vddio_boot>;
 };
+
+&pwm_ef {
+	status = "okay";
+	pinctrl-0 = <&pwm_e_pins>;
+	pinctrl-names = "default";
+	clocks = <&clkc CLKID_FCLK_DIV4>;
+	clock-names = "clkin0";
+};
-- 
1.9.1