| Message ID | 20240521102435.10019-2-marex@denx.de (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | [1/3] arm64: dts: imx8mm: Describe carrier board 20 MHz Xtal on i.MX8MM Menlo board | expand |
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-mx8menlo.dts b/arch/arm64/boot/dts/freescale/imx8mm-mx8menlo.dts index 4c38979f7333f..ed83a019159ac 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-mx8menlo.dts +++ b/arch/arm64/boot/dts/freescale/imx8mm-mx8menlo.dts @@ -210,7 +210,7 @@ &iomuxc { pinctrl_beeper: beepergrp { fsl,pins = < - MX8MM_IOMUXC_SPDIF_TX_GPIO5_IO3 0x1c4 + MX8MM_IOMUXC_SPDIF_TX_GPIO5_IO3 0x4 >; }; @@ -225,8 +225,8 @@ MX8MM_IOMUXC_ECSPI1_SS0_GPIO5_IO9 0x1c4 pinctrl_led: ledgrp { fsl,pins = < - MX8MM_IOMUXC_SAI1_TXD6_GPIO4_IO18 0x1c4 - MX8MM_IOMUXC_SAI1_TXFS_GPIO4_IO10 0x1c4 + MX8MM_IOMUXC_SAI1_TXD6_GPIO4_IO18 0x184 + MX8MM_IOMUXC_SAI1_TXFS_GPIO4_IO10 0x184 >; };
i.MX8MM Mask Set Errata for Mask 0N87W, Rev. 1, 09/2021 document has the following errata, which could affect the beeper and the LEDs. The beeper has external pull down and it is likely gonna be off most of the time, so disable pull resistors altogether. The LEDs do not have any external pull resistors, so enable internal pull down, as they are also likely gonna be off most of the time. The rest of the IO is not affected by the errata, as it is not being driven against the pull resistor for the majority of uptime. " ERR050080: IO: Degradation of internal IO pullup/pulldown current capability for IO's continuously driven in a 3.3V operating mode Description: There is a degradation of the internal IO pullup/pulldown capability when the IO pads are continuously driven in the opposite logic level, for example, when internal pullup is enabled with external logic driving the pin low, and a 3.3V operating condition which limits the pads pullup/pulldown ability. All IO pin groups are impacted except for XTAL, DDR, PCI, USB, and MIPI PHY IO’s. Workaround: Where the IO’s are used for 3.3V operation and the circuit requires pullup or pulldown, use external resistors for the pullup/pulldown and disable the internal pullup/pulldown via software. " Signed-off-by: Marek Vasut <marex@denx.de> --- Cc: Conor Dooley <conor+dt@kernel.org> Cc: Fabio Estevam <festevam@gmail.com> Cc: Krzysztof Kozlowski <krzk+dt@kernel.org> Cc: Pengutronix Kernel Team <kernel@pengutronix.de> Cc: Rob Herring <robh@kernel.org> Cc: Sascha Hauer <s.hauer@pengutronix.de> Cc: Shawn Guo <shawnguo@kernel.org> Cc: devicetree@vger.kernel.org Cc: imx@lists.linux.dev Cc: linux-arm-kernel@lists.infradead.org --- arch/arm64/boot/dts/freescale/imx8mm-mx8menlo.dts | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)