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Mon, 5 Feb 2024 01:00:52 -0700 Received: from virtualbox.microchip.com (10.10.85.11) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server id 15.1.2507.35 via Frontend Transport; Mon, 5 Feb 2024 01:00:50 -0700 From: Mihai Sain To: , , , , , , , , CC: Mihai Sain Subject: [PATCH v2 8/8] ARM: dts: microchip: sama5d2_xplained: Add power-supply property for sdmmc0 node Date: Mon, 5 Feb 2024 10:00:26 +0200 Message-ID: <20240205080027.4565-9-mihai.sain@microchip.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240205080027.4565-1-mihai.sain@microchip.com> References: <20240205080027.4565-1-mihai.sain@microchip.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1790045186674410154 X-GMAIL-MSGID: 1790045186674410154 The sdmmc0 controller is powered from 3.3V regulator. Add vmmc-supply and vqmmc-supply properties to sdmmc0 node. The sdmmc controller from SAMA5D2 MPU has support for IO voltage signaling/switching required by the UHS sd-card. In order to avoid the issues from the tuning procedure required by the UHS cards, keep the vqmmc at 3V3 to use the sd high-speed mode. Signed-off-by: Mihai Sain --- arch/arm/boot/dts/microchip/at91-sama5d2_xplained.dts | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/boot/dts/microchip/at91-sama5d2_xplained.dts b/arch/arm/boot/dts/microchip/at91-sama5d2_xplained.dts index 6680031387e8..9b7e56790a5a 100644 --- a/arch/arm/boot/dts/microchip/at91-sama5d2_xplained.dts +++ b/arch/arm/boot/dts/microchip/at91-sama5d2_xplained.dts @@ -67,6 +67,8 @@ sdmmc0: sdio-host@a0000000 { pinctrl-0 = <&pinctrl_sdmmc0_default>; non-removable; mmc-ddr-3_3v; + vmmc-supply = <&vdd_3v3_reg>; + vqmmc-supply = <&vdd_3v3_reg>; status = "okay"; };