From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752414AbdFMF0t (ORCPT ); Tue, 13 Jun 2017 01:26:49 -0400 Received: from regular1.263xmail.com ([211.150.99.136]:56430 "EHLO regular1.263xmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752357AbdFMF0r (ORCPT ); Tue, 13 Jun 2017 01:26:47 -0400 X-263anti-spam: KSV:0; X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-KSVirus-check: 0 X-ABS-CHECKED: 4 X-RL-SENDER: jeffy.chen@rock-chips.com X-FST-TO: linux-kernel@vger.kernel.org X-SENDER-IP: 103.29.142.67 X-LOGIN-NAME: jeffy.chen@rock-chips.com X-UNIQUE-TAG: <322a047a76c30b736194914ea4338310> X-ATTACHMENT-NUM: 0 X-DNS-TYPE: 0 From: Jeffy Chen To: linux-kernel@vger.kernel.org, broonie@kernel.org Cc: briannorris@chromium.org, dianders@chromium.org, heiko@sntech.de, Jeffy Chen , devicetree@vger.kernel.org, linux-rockchip@lists.infradead.org, Rob Herring , linux-arm-kernel@lists.infradead.org, Will Deacon , Mark Rutland , Catalin Marinas 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> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1497331543-8565-1-git-send-email-jeffy.chen@rock-chips.com> References: <1497331543-8565-1-git-send-email-jeffy.chen@rock-chips.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@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