From: djw@t-chip.com.cn To: linux-rockchip@lists.infradead.org Cc: Wayne Chou <zxf@t-chip.com.cn>, Levin Du <djw@t-chip.com.cn>, Heiko Stuebner <heiko@sntech.de>, devicetree@vger.kernel.org, David Wu <david.wu@rock-chips.com>, Liang Chen <cl@rock-chips.com>, linux-kernel@vger.kernel.org, Rob Herring <robh+dt@kernel.org>, Rocky Hao <rocky.hao@rock-chips.com>, Will Deacon <will.deacon@arm.com>, Joseph Chen <chenjh@rock-chips.com>, Mark Rutland <mark.rutland@arm.com>, Catalin Marinas <catalin.marinas@arm.com>, linux-arm-kernel@lists.infradead.org Subject: [PATCH v4 4/4] arm64: dts: rockchip: add sdmmc UHS support for roc-rk3328-cc Date: Tue, 31 Jul 2018 13:59:22 +0800 [thread overview] Message-ID: <1533016762-5268-5-git-send-email-djw@t-chip.com.cn> (raw) In-Reply-To: <1533016762-5268-1-git-send-email-djw@t-chip.com.cn> From: Levin Du <djw@t-chip.com.cn> 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 <&grf_gpio 0>, 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 <djw@t-chip.com.cn> --- Changes in v4: - Use <&grf_gpio 0> to refer to the GPIO_MUTE pin. Changes in v3: - Use <&gpio_mute 0> instead of <&gpio_mute 1> to refer to the GPIO_MUTE pin. 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 | 24 +++++++++++++++++++++++- 1 file changed, 23 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..1edb39a 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 = <&grf_gpio 0 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"; }; @@ -277,3 +295,7 @@ &usb_host0_ohci { status = "okay"; }; + +&grf_gpio { + status = "okay"; +}; -- 2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: djw@t-chip.com.cn (djw at t-chip.com.cn) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v4 4/4] arm64: dts: rockchip: add sdmmc UHS support for roc-rk3328-cc Date: Tue, 31 Jul 2018 13:59:22 +0800 [thread overview] Message-ID: <1533016762-5268-5-git-send-email-djw@t-chip.com.cn> (raw) In-Reply-To: <1533016762-5268-1-git-send-email-djw@t-chip.com.cn> From: Levin Du <djw@t-chip.com.cn> 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 <&grf_gpio 0>, 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 <djw@t-chip.com.cn> --- Changes in v4: - Use <&grf_gpio 0> to refer to the GPIO_MUTE pin. Changes in v3: - Use <&gpio_mute 0> instead of <&gpio_mute 1> to refer to the GPIO_MUTE pin. 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 | 24 +++++++++++++++++++++++- 1 file changed, 23 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..1edb39a 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 = <&grf_gpio 0 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"; }; @@ -277,3 +295,7 @@ &usb_host0_ohci { status = "okay"; }; + +&grf_gpio { + status = "okay"; +}; -- 2.7.4
next prev parent reply other threads:[~2018-07-31 6:00 UTC|newest] Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top 2018-07-31 5:59 [PATCH v4 0/4] Add sdmmc UHS support to ROC-RK3328-CC board djw 2018-07-31 5:59 ` djw at t-chip.com.cn 2018-07-31 5:59 ` djw 2018-07-31 5:59 ` [PATCH v4 1/4] gpio: syscon: rockchip: add GRF GPIO support for rk3328 djw 2018-07-31 5:59 ` djw at t-chip.com.cn 2018-07-31 19:36 ` Rob Herring 2018-07-31 19:36 ` Rob Herring 2018-08-01 11:46 ` Heiko Stuebner 2018-08-01 11:46 ` Heiko Stuebner 2018-08-03 17:13 ` Linus Walleij 2018-08-03 17:13 ` Linus Walleij 2018-07-31 5:59 ` [PATCH v4 2/4] arm64: dts: rockchip: add GRF GPIO controller to rk3328 djw 2018-07-31 5:59 ` djw at t-chip.com.cn 2018-08-04 13:16 ` Heiko Stuebner 2018-08-04 13:16 ` Heiko Stuebner 2018-07-31 5:59 ` [PATCH v4 3/4] arm64: dts: rockchip: add io-domain to roc-rk3328-cc djw 2018-07-31 5:59 ` djw at t-chip.com.cn 2018-08-02 12:54 ` Heiko Stuebner 2018-08-02 12:54 ` Heiko Stuebner 2018-07-31 5:59 ` djw [this message] 2018-07-31 5:59 ` [PATCH v4 4/4] arm64: dts: rockchip: add sdmmc UHS support for roc-rk3328-cc djw at t-chip.com.cn 2018-08-04 13:18 ` Heiko Stuebner 2018-08-04 13:18 ` Heiko Stuebner
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