diff mbox series

[v4,2/9] arm64: dts: imx8mp: Add pinctrl config definitions

Message ID 20250402-initial_display-v4-2-9f898838a864@gocontroll.com (mailing list archive)
State New
Headers show
Series arm64: dts: freescale: Add support for the GOcontroll Moduline Display | expand

Commit Message

Maud Spierings | GOcontroll April 2, 2025, 7:07 a.m. UTC 
From: Maud Spierings <maudspierings@gocontroll.com>

Currently to configure each IOMUXC_SW_PAD_CTL_PAD the raw value of this
register is written in the dts, these values are not obvious. Add defines
which describe the fields of this register which can be or-ed together to
produce readable settings.

Reviewed-by: Frank Li <Frank.Li@nxp.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Maud Spierings <maudspierings@gocontroll.com>
---
This patch has already been sent in a different group of patches: [1]
It was requested there to submit it along with a user, this series also
includes some users for it.

[1]: https://lore.kernel.org/all/20250218-pinctrl_defines-v2-2-c554cad0e1d2@gocontroll.com/
---
 arch/arm64/boot/dts/freescale/imx8mp-pinfunc.h | 33 ++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-pinfunc.h b/arch/arm64/boot/dts/freescale/imx8mp-pinfunc.h
index 0fef066471ba607be02d0ab15da5a048a8a213a7..19a23d148246f4fb990050a9d06d20b6e769f254 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-pinfunc.h
+++ b/arch/arm64/boot/dts/freescale/imx8mp-pinfunc.h
@@ -6,6 +6,39 @@ 
 #ifndef __DTS_IMX8MP_PINFUNC_H
 #define __DTS_IMX8MP_PINFUNC_H
 
+/* Drive Strength */
+#define MX8MP_DSE_X1 0x0
+#define MX8MP_DSE_X2 0x4
+#define MX8MP_DSE_X4 0x2
+#define MX8MP_DSE_X6 0x6
+
+/* Slew Rate */
+#define MX8MP_FSEL_FAST 0x10
+#define MX8MP_FSEL_SLOW 0x0
+
+/* Open Drain */
+#define MX8MP_ODE_ENABLE 0x20
+#define MX8MP_ODE_DISABLE 0x0
+
+#define MX8MP_PULL_DOWN 0x0
+#define MX8MP_PULL_UP 0x40
+
+/* Hysteresis */
+#define MX8MP_HYS_CMOS 0x0
+#define MX8MP_HYS_SCHMITT 0x80
+
+#define MX8MP_PULL_ENABLE 0x100
+#define MX8MP_PULL_DISABLE 0x0
+
+/* SION force input mode */
+#define MX8MP_SION 0x40000000
+
+/* long defaults */
+#define MX8MP_USDHC_DATA_DEFAULT (MX8MP_FSEL_FAST | MX8MP_PULL_UP | \
+								  MX8MP_HYS_SCHMITT | MX8MP_PULL_ENABLE)
+#define MX8MP_I2C_DEFAULT (MX8MP_DSE_X6 | MX8MP_PULL_UP | MX8MP_HYS_SCHMITT | \
+						   MX8MP_PULL_ENABLE | MX8MP_SION)
+
 /*
  * The pin function ID is a tuple of
  * <mux_reg conf_reg input_reg mux_mode input_val>