From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeffy Chen Subject: [PATCH v2 4/4] arm64: dts: rockchip: use cs-gpios for cros_ec_spi Date: Tue, 13 Jun 2017 13:25:43 +0800 Message-ID: <1497331543-8565-4-git-send-email-jeffy.chen@rock-chips.com> References: <1497331543-8565-1-git-send-email-jeffy.chen@rock-chips.com> Return-path: In-Reply-To: <1497331543-8565-1-git-send-email-jeffy.chen-TNX95d0MmH7DzftRWevZcw@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org Cc: briannorris-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org, dianders-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org, heiko-4mtYJXux2i+zQB+pC5nmwQ@public.gmane.org, Jeffy Chen , devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, Rob Herring , linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, Will Deacon , Mark Rutland , Catalin Marinas List-Id: devicetree@vger.kernel.org The cros_ec requires CS line to be active after last message. But the CS would be toggled when powering off/on rockchip spi, which breaks ec xfer. Use GPIO CS to prevent that. Signed-off-by: Jeffy Chen --- Changes in v2: Fix wrong pinconf for spi5_cs0. arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi index eb50593..b34a51d 100644 --- a/arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi @@ -790,6 +790,8 @@ ap_i2c_audio: &i2c8 { &spi5 { status = "okay"; + cs-gpios = <&gpio2 23 GPIO_ACTIVE_HIGH>; + cros_ec: ec@0 { compatible = "google,cros-ec-spi"; reg = <0>; @@ -813,6 +815,10 @@ ap_i2c_audio: &i2c8 { }; }; +&spi5_cs0 { + rockchip,pins = ; +}; + &tsadc { status = "okay"; -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html