The Nyan boards have a Marvell 88w8897 wifi card connected through SDIO
that needs the reset line to be asserted before mmc power up and deasserted
afterwards.
This patch also adds references to the power supplies of the card so that
the regulators are enabled when it's probed.
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@xxxxxxxxxxxxx>
Acked-by: Stephen Warren <swarren@xxxxxxxxxx>
Reviewed-by: Alexandre Courbot <acourbot@xxxxxxxxxx>
---
arch/arm/boot/dts/tegra124-nyan.dtsi | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/arch/arm/boot/dts/tegra124-nyan.dtsi b/arch/arm/boot/dts/tegra124-nyan.dtsi
index 579b0b9..d3a95f9 100644
--- a/arch/arm/boot/dts/tegra124-nyan.dtsi
+++ b/arch/arm/boot/dts/tegra124-nyan.dtsi
@@ -207,7 +207,6 @@
regulator-name = "+1.8V_VDDIO";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
- regulator-boot-on;
regulator-always-on;
};
@@ -364,12 +363,20 @@
status = "okay";
};
+ sdhci0_pwrseq: sdhci0_pwrseq {
+ compatible = "mmc-pwrseq-simple";
+
+ reset-gpios = <&gpio TEGRA_GPIO(X, 7) GPIO_ACTIVE_LOW>;
+ };
+
sdhci@0,700b0000 { /* WiFi/BT on this bus */
status = "okay";
- power-gpios = <&gpio TEGRA_GPIO(X, 7) GPIO_ACTIVE_HIGH>;
bus-width = <4>;
no-1-8-v;
non-removable;
+ mmc-pwrseq = <&sdhci0_pwrseq>;
+ vmmc-supply = <&vdd_3v3_lp0>;
+ vqmmc-supply = <&vddio_1v8>;
};
sdhci@0,700b0400 { /* SD Card on this bus */
--
2.1.0
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
