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arm64: dts: imx8mm-kontron: Disable pullups for onboard UART signals on BL board

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These signals are actively driven by the SoC or by the onboard
transceiver. There's no need to enable the internal pull resistors
and due to silicon errata ERR050080 let's disable the internal ones
to prevent any unwanted behavior in case they wear out.

Fixes: 8668d8b2e6 ("arm64: dts: Add the Kontron i.MX8M Mini SoMs and baseboards")
Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Frieder Schrempf 2024-01-08 09:49:01 +01:00 committed by Shawn Guo
parent c6d9b5672a
commit 162aadaa0d
1 changed files with 8 additions and 8 deletions
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16
arch/arm64/boot/dts/freescale/imx8mm-kontron-bl.dts
View file

@ -292,19 +292,19 @@ MX8MM_IOMUXC_SPDIF_RX_PWM2_OUT 0x19
pinctrl_uart1: uart1grp {
fsl,pins = <
MX8MM_IOMUXC_SAI2_RXC_UART1_DCE_RX 0x140
MX8MM_IOMUXC_SAI2_RXFS_UART1_DCE_TX 0x140
MX8MM_IOMUXC_SAI2_RXD0_UART1_DCE_RTS_B 0x140
MX8MM_IOMUXC_SAI2_TXFS_UART1_DCE_CTS_B 0x140
MX8MM_IOMUXC_SAI2_RXC_UART1_DCE_RX 0x0
MX8MM_IOMUXC_SAI2_RXFS_UART1_DCE_TX 0x0
MX8MM_IOMUXC_SAI2_RXD0_UART1_DCE_RTS_B 0x0
MX8MM_IOMUXC_SAI2_TXFS_UART1_DCE_CTS_B 0x0
>;
};
pinctrl_uart2: uart2grp {
fsl,pins = <
MX8MM_IOMUXC_SAI3_TXFS_UART2_DCE_RX 0x140
MX8MM_IOMUXC_SAI3_TXC_UART2_DCE_TX 0x140
MX8MM_IOMUXC_SAI3_RXD_UART2_DCE_RTS_B 0x140
MX8MM_IOMUXC_SAI3_RXC_UART2_DCE_CTS_B 0x140
MX8MM_IOMUXC_SAI3_TXFS_UART2_DCE_RX 0x0
MX8MM_IOMUXC_SAI3_TXC_UART2_DCE_TX 0x0
MX8MM_IOMUXC_SAI3_RXD_UART2_DCE_RTS_B 0x0
MX8MM_IOMUXC_SAI3_RXC_UART2_DCE_CTS_B 0x0
>;
};