linux-kernel - [PATCH v3 1/2] arm64: dts: rockchip: RockPro64: enable wifi module at sdio0

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Date:   Wed, 18 Dec 2019 23:35:22 +0100
From:   Soeren Moch <smoch@....de>
To:     Heiko Stuebner <heiko@...ech.de>
Cc:     Soeren Moch <smoch@....de>, Robin Murphy <robin.murphy@....com>,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3 1/2] arm64: dts: rockchip: RockPro64: enable wifi module at sdio0

RockPro64 supports an Ampak AP6359SA based wifi/bt combo module.
The BCM4359/9 wifi controller in this module is connected to sdio0,
enable this interface.

Use the in-band sdio irq instead of the out-of-band wifi_host_wake_l
signal since the latter is not working reliably on this board (probably
due to it's PCIe WAKE# connection).

Signed-off-by: Soeren Moch <smoch@....de>
---
changes in v3:
- none
changes in v2:
- add comment about irq in commit message

Not sure where to place exactly the sdio0 node in the dts because
existing sd nodes are not sorted alphabetically.

Cc: Heiko Stuebner <heiko@...ech.de>
Cc: Robin Murphy <robin.murphy@....com>
Cc: linux-arm-kernel@...ts.infradead.org
Cc: linux-rockchip@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org
---
 .../boot/dts/rockchip/rk3399-rockpro64.dts    | 21 ++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts b/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts
index 7f4b2eba31d4..9fa92790d6e0 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts
@@ -71,13 +71,6 @@
 		clock-names = "ext_clock";
 		pinctrl-names = "default";
 		pinctrl-0 = <&wifi_enable_h>;
-
-		/*
-		 * On the module itself this is one of these (depending
-		 * on the actual card populated):
-		 * - SDIO_RESET_L_WL_REG_ON
-		 * - PDN (power down when low)
-		 */
 		reset-gpios = <&gpio0 RK_PB2 GPIO_ACTIVE_LOW>;
 	};

@@ -650,6 +643,20 @@
 	status = "okay";
 };

+&sdio0 {
+	bus-width = <4>;
+	cap-sd-highspeed;
+	cap-sdio-irq;
+	disable-wp;
+	keep-power-in-suspend;
+	mmc-pwrseq = <&sdio_pwrseq>;
+	non-removable;
+	pinctrl-names = "default";
+	pinctrl-0 = <&sdio0_bus4 &sdio0_cmd &sdio0_clk>;
+	sd-uhs-sdr104;
+	status = "okay";
+};
+
 &sdmmc {
 	bus-width = <4>;
 	cap-sd-highspeed;
--
2.17.1