From mboxrd@z Thu Jan 1 00:00:00 1970 From: cw00.choi@samsung.com (Chanwoo Choi) Date: Mon, 14 Mar 2016 17:48:32 +0900 Subject: [PATCH 09/10] ARM: dts: Add MSHC2 dt node for SD card for exynos3250-artik5-devel board In-Reply-To: <56E676EE.8060500@samsung.com> References: <1457921056-21257-1-git-send-email-cw00.choi@samsung.com> <1457921056-21257-11-git-send-email-cw00.choi@samsung.com> <56E676EE.8060500@samsung.com> Message-ID: <56E67AE0.9060306@samsung.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 2016? 03? 14? 17:31, Krzysztof Kozlowski wrote: > On 14.03.2016 11:04, Chanwoo Choi wrote: >> From: Jaehoon Chung >> >> This patch adds MSHC (Mobile Storage Host Controller) dt node for >> Exynos3250 SoC. MSHC is an interface between the system and the SD card >> >> Signed-off-by: Jaehoon Chung >> Signed-off-by: Chanwoo Choi >> --- >> arch/arm/boot/dts/exynos3250-artik5-devel.dts | 16 ++++++++++++++++ >> 1 file changed, 16 insertions(+) >> >> diff --git a/arch/arm/boot/dts/exynos3250-artik5-devel.dts b/arch/arm/boot/dts/exynos3250-artik5-devel.dts >> index d17c28969118..a371baf8536d 100644 >> --- a/arch/arm/boot/dts/exynos3250-artik5-devel.dts >> +++ b/arch/arm/boot/dts/exynos3250-artik5-devel.dts >> @@ -21,6 +21,22 @@ >> "samsung,exynos3250", "samsung,exynos3"; >> }; >> >> +&mshc_2 { >> + num-slots = <1>; >> + cap-sd-highspeed; >> + disable-wp; >> + card-detect-delay = <200>; >> + clock-frequency = <100000000>; >> + clock-freq-min-max = <400000 100000000>; >> + samsung,dw-mshc-ciu-div = <1>; >> + samsung,dw-mshc-sdr-timing = <0 1>; >> + samsung,dw-mshc-ddr-timing = <1 2>; >> + pinctrl-names = "default"; >> + pinctrl-0 = <&sd2_cmd &sd2_clk &sd2_cd &sd2_bus1 &sd2_bus4>; >> + bus-width = <4>; >> + status = "okay"; > > vqmmc-supply = ldo3? ldo3 is always on state because ldo3 is used for various IP in exynos3250. I think that we had better to remain always on state for ldo3. Best Regards, Chanwoo Choi