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arm64: dts: ti: verdin-am62: Improve spi1 chip-select pinctrl

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Verdin SPI_1 interface has a dedicated hardware controlled chip select
that is currently configured in the same pinctrl group as MISO/MOSI/CLK,
however it is possible that it can be used only as a standard GPIO be it
a chip select or not.

To maximize flexibility and avoid duplication in the carrier board dts
files move the SPI_1 CS in a dedicated pinctrl and also adds an
additional pinctrl to simplify using SPI_1 CS as a GPIO.

Signed-off-by: Joao Paulo Goncalves <joao.goncalves@toradex.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Link: https://lore.kernel.org/r/20231205184605.35225-2-francesco@dolcini.it
Signed-off-by: Nishanth Menon <nm@ti.com>
This commit is contained in:
Joao Paulo Goncalves 2023-12-05 19:46:03 +01:00 committed by Nishanth Menon
parent fecdf6de7e
commit fcb335934c
1 changed files with 15 additions and 2 deletions
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17
arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi
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@ -233,6 +233,13 @@
>;
};
/* Verdin SPI_1 CS as GPIO */
pinctrl_qspi1_io4_gpio: main-gpio0-7-default-pins {
pinctrl-single,pins = <
AM62X_IOPAD(0x001c, PIN_INPUT, 7) /* (J23) OSPI0_D4.GPIO0_7 */ /* SODIMM 202 */
>;
};
/* Verdin QSPI_1_CS# as GPIO (conflict with Verdin QSPI_1 interface) */
pinctrl_qspi1_cs_gpio: main-gpio0-11-default-pins {
pinctrl-single,pins = <
@ -599,12 +606,18 @@
pinctrl_spi1: main-spi1-default-pins {
pinctrl-single,pins = <
AM62X_IOPAD(0x0020, PIN_INPUT, 1) /* (J25) OSPI0_D5.SPI1_CLK */ /* SODIMM 196 */
AM62X_IOPAD(0x001c, PIN_INPUT, 1) /* (J23) OSPI0_D4.SPI1_CS0 */ /* SODIMM 202 */
AM62X_IOPAD(0x0024, PIN_INPUT, 1) /* (H25) OSPI0_D6.SPI1_D0 */ /* SODIMM 200 */
AM62X_IOPAD(0x0028, PIN_INPUT, 1) /* (J22) OSPI0_D7.SPI1_D1 */ /* SODIMM 198 */
>;
};
/* Verdin SPI_1 CS */
pinctrl_spi1_cs0: main-spi1-cs0-default-pins {
pinctrl-single,pins = <
AM62X_IOPAD(0x001c, PIN_INPUT, 1) /* (J23) OSPI0_D4.SPI1_CS0 */ /* SODIMM 202 */
>;
};
/* ETH_25MHz_CLK */
pinctrl_eth_clock: main-system-clkout0-default-pins {
pinctrl-single,pins = <
@ -1278,7 +1291,7 @@
/* Verdin SPI_1 */
&main_spi1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_spi1>;
pinctrl-0 = <&pinctrl_spi1>, <&pinctrl_spi1_cs0>;
ti,pindir-d0-out-d1-in;
status = "disabled";
};