From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752260AbeERDxB (ORCPT ); Thu, 17 May 2018 23:53:01 -0400 Received: from regular1.263xmail.com ([211.150.99.136]:56540 "EHLO regular1.263xmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752199AbeERDwz (ORCPT ); Thu, 17 May 2018 23:52:55 -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: djw@t-chip.com.cn X-FST-TO: linux-rockchip@lists.infradead.org X-SENDER-IP: 183.57.25.242 X-LOGIN-NAME: djw@t-chip.com.cn X-UNIQUE-TAG: <466b15a17f5934a1fda2f94fa937f5aa> X-ATTACHMENT-NUM: 0 X-DNS-TYPE: 0 From: djw@t-chip.com.cn To: linux-rockchip@lists.infradead.org Cc: Wayne Chou , Levin Du , Heiko Stuebner , devicetree@vger.kernel.org, David Wu , Liang Chen , William Wu , linux-kernel@vger.kernel.org, Rob Herring , Joseph Chen , Will Deacon , Rocky Hao , Mark Rutland , Catalin Marinas , linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 5/5] arm64: dts: rockchip: Add sdmmc UHS support for roc-rk3328-cc Date: Fri, 18 May 2018 11:52:08 +0800 Message-Id: <1526615528-9707-5-git-send-email-djw@t-chip.com.cn> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1526615528-9707-1-git-send-email-djw@t-chip.com.cn> References: <1526614328-6869-1-git-send-email-djw@t-chip.com.cn> <1526615528-9707-1-git-send-email-djw@t-chip.com.cn> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Levin Du In roc-rk3328-cc board, the signal voltage of sdmmc is supplied by the vcc_sdio regulator, which is a mux between 1.8V and 3.3V, controlled by a special output only gpio pin labeled "gpiomut_pmuio_iout", corresponding bit 1 of the syscon GRF_SOC_CON10. This special pin can now be reference as <&gpio_mute 1>, thanks to the gpio-syscon driver, which makes writing regulator-gpio possible. If the signal voltage changes, the io domain needs to change correspondingly. To use this feature, the following options are required in kernel config: - CONFIG_GPIO_SYSCON=y - CONFIG_POWER_AVS=y - CONFIG_ROCKCHIP_IODOMAIN=y Signed-off-by: Levin Du --- Changes in v2: - Rename gpio_syscon10 to gpio_mute in rk3328-roc-cc.dts Changes in v1: - Split into small patches - Sort dts properties in sdmmc node arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts b/arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts index b983abd..e3162bb 100644 --- a/arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts +++ b/arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts @@ -41,6 +41,19 @@ vin-supply = <&vcc_io>; }; + vcc_sdio: sdmmcio-regulator { + compatible = "regulator-gpio"; + gpios = <&gpio_mute 1 GPIO_ACTIVE_HIGH>; + states = <1800000 0x1 + 3300000 0x0>; + regulator-name = "vcc_sdio"; + regulator-type = "voltage"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <3300000>; + regulator-always-on; + vin-supply = <&vcc_sys>; + }; + vcc_host1_5v: vcc_otg_5v: vcc-host1-5v-regulator { compatible = "regulator-fixed"; enable-active-high; @@ -213,7 +226,7 @@ vccio1-supply = <&vcc_io>; vccio2-supply = <&vcc18_emmc>; - vccio3-supply = <&vcc_io>; + vccio3-supply = <&vcc_sdio>; vccio4-supply = <&vcc_18>; vccio5-supply = <&vcc_io>; vccio6-supply = <&vcc_io>; @@ -242,7 +255,12 @@ max-frequency = <150000000>; pinctrl-names = "default"; pinctrl-0 = <&sdmmc0_clk &sdmmc0_cmd &sdmmc0_dectn &sdmmc0_bus4>; + sd-uhs-sdr12; + sd-uhs-sdr25; + sd-uhs-sdr50; + sd-uhs-sdr104; vmmc-supply = <&vcc_sd>; + vqmmc-supply = <&vcc_sdio>; status = "okay"; }; -- 2.7.4