From: Judith Mendez <jm@ti.com>
To: Judith Mendez <jm@ti.com>, Nishanth Menon <nm@ti.com>,
Vignesh Raghavendra <vigneshr@ti.com>
Cc: Tero Kristo <kristo@kernel.org>, Rob Herring <robh@kernel.org>,
"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
Moteen Shah <m-shah@ti.com>, Andrew Davis <afd@ti.com>
Subject: [PATCH 2/4] arm64: dts: ti: k3-am62l-evm: Disable MMC0 internal pulls
Date: Thu, 12 Feb 2026 12:42:44 -0600 [thread overview]
Message-ID: <20260212184246.2316659-3-jm@ti.com> (raw)
In-Reply-To: <20260212184246.2316659-1-jm@ti.com>
AM62L EVM has external pullups on MMC0 CMD and D0 pins [0]. Remove
internal pullups considering:
- having both internal and external pullups reduces the total pull-up
resistance < 47K resulting in a value below the spec recommended 50K ohms
- having both pullups results in unnecessary power consumption
Fixes: 00fb4c73b67d ("arm64: dts: ti: k3-am62l: add initial reference board file")
[0] https://www.ti.com/lit/zip/SPRCAL6
Signed-off-by: Judith Mendez <jm@ti.com>
---
arch/arm64/boot/dts/ti/k3-am62l3-evm.dts | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/boot/dts/ti/k3-am62l3-evm.dts b/arch/arm64/boot/dts/ti/k3-am62l3-evm.dts
index cae04cce33736..5085cd255fcd5 100644
--- a/arch/arm64/boot/dts/ti/k3-am62l3-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-am62l3-evm.dts
@@ -253,9 +253,9 @@ AM62LX_IOPAD(0x01e0, PIN_INPUT_PULLUP, 0) /* (D8) I2C2_SDA */
mmc0_pins_default: mmc0-default-pins {
pinctrl-single,pins = <
- AM62LX_IOPAD(0x0214, PIN_INPUT_PULLUP, 0) /* (D2) MMC0_CMD */
+ AM62LX_IOPAD(0x0214, PIN_INPUT, 0) /* (D2) MMC0_CMD */
AM62LX_IOPAD(0x020c, PIN_OUTPUT, 0) /* (B2) MMC0_CLK */
- AM62LX_IOPAD(0x0208, PIN_INPUT_PULLUP, 0) /* (D3) MMC0_DAT0 */
+ AM62LX_IOPAD(0x0208, PIN_INPUT, 0) /* (D3) MMC0_DAT0 */
AM62LX_IOPAD(0x0204, PIN_INPUT_PULLUP, 0) /* (D4) MMC0_DAT1 */
AM62LX_IOPAD(0x0200, PIN_INPUT_PULLUP, 0) /* (C1) MMC0_DAT2 */
AM62LX_IOPAD(0x01fc, PIN_INPUT_PULLUP, 0) /* (C2) MMC0_DAT3 */
--
2.52.0
next prev parent reply other threads:[~2026-02-12 18:42 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-12 18:42 [PATCH 0/4] Fix MMC pin pull configurations Judith Mendez
2026-02-12 18:42 ` [PATCH 1/4] arm64: dts: ti: k3-am62p5-sk: Disable MMC1 internal pulls on data lines Judith Mendez
2026-02-12 18:42 ` Judith Mendez [this message]
2026-02-20 8:57 ` [PATCH 2/4] arm64: dts: ti: k3-am62l-evm: Disable MMC0 internal pulls Moteen Shah
2026-02-23 20:15 ` Judith Mendez
2026-02-12 18:42 ` [PATCH 3/4] arm64: dts: ti: k3-am62l-evm: Disable MMC1 internal pulls on data pins Judith Mendez
2026-02-12 18:42 ` [PATCH 4/4] arm64: dts: ti: k3-am62-lp-sk: Enable internal pulls for MMC0 " Judith Mendez
2026-02-20 9:00 ` Moteen Shah
2026-02-20 8:49 ` [PATCH 0/4] Fix MMC pin pull configurations Moteen Shah
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