At present pin configuration on link does not use the standard mechanism, but some rather ugly custom code. As a first step to resolving this, add the pin configuration to the device tree.
Four of the GPIOs must be available before relocation (for SDRAM pin strapping).
Signed-off-by: Simon Glass sjg@chromium.org ---
Changes in v2: - Add GPIO output definition for a1 and a6
arch/x86/dts/chromebook_link.dts | 155 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 155 insertions(+)
diff --git a/arch/x86/dts/chromebook_link.dts b/arch/x86/dts/chromebook_link.dts index 7ddbe43..fb1b31d 100644 --- a/arch/x86/dts/chromebook_link.dts +++ b/arch/x86/dts/chromebook_link.dts @@ -1,5 +1,7 @@ /dts-v1/;
+#include <dt-bindings/gpio/x86-gpio.h> + /include/ "skeleton.dtsi" /include/ "keyboard.dtsi" /include/ "serial.dtsi" @@ -62,6 +64,159 @@ intel,duplicate-por; };
+ pch_pinctrl { + compatible = "intel,x86-pinctrl"; + u-boot,dm-pre-reloc; + reg = <0 0>; + + gpio_a0 { + gpio-offset = <0 0>; + mode-gpio; + direction = <PIN_INPUT>; + }; + + gpio_a1 { + gpio-offset = <0>; + mode-gpio; + direction = <PIN_OUTPUT>; + output-value = <1>; + }; + + gpio_a3 { + gpio-offset = <0 3>; + mode-gpio; + direction = <PIN_INPUT>; + }; + + gpio_a5 { + gpio-offset = <0 5>; + mode-gpio; + direction = <PIN_INPUT>; + }; + + gpio_a6 { + gpio-offset = <0 6>; + mode-gpio; + direction = <PIN_OUTPUT>; + output-value = <1>; + }; + + gpio_a7 { + gpio-offset = <0 7>; + mode-gpio; + direction = <PIN_INPUT>; + invert; + }; + + gpio_a8 { + gpio-offset = <0 8>; + mode-gpio; + direction = <PIN_INPUT>; + invert; + }; + + gpio_a9 { + gpio-offset = <0 9>; + mode-gpio; + direction = <PIN_INPUT>; + }; + + gpio_a10 { + u-boot,dm-pre-reloc; + gpio-offset = <0 10>; + mode-gpio; + direction = <PIN_INPUT>; + }; + + gpio_a11 { + gpio-offset = <0 11>; + mode-gpio; + direction = <PIN_INPUT>; + }; + + gpio_a12 { + gpio-offset = <0 12>; + mode-gpio; + direction = <PIN_INPUT>; + invert; + }; + + gpio_a14 { + gpio-offset = <0 14>; + mode-gpio; + direction = <PIN_INPUT>; + invert; + }; + + gpio_a15 { + gpio-offset = <0 15>; + mode-gpio; + direction = <PIN_INPUT>; + invert; + }; + + gpio_a21 { + gpio-offset = <0 21>; + mode-gpio; + direction = <PIN_INPUT>; + }; + + gpio_a24 { + gpio-offset = <0 24>; + mode-gpio; + output-value = <0>; + direction = <PIN_OUTPUT>; + }; + + gpio_a28 { + gpio-offset = <0 28>; + mode-gpio; + direction = <PIN_INPUT>; + }; + + gpio_b4 { + gpio-offset = <0x30 4>; + mode-gpio; + direction = <PIN_OUTPUT>; + output-value = <1>; + }; + + gpio_b9 { + u-boot,dm-pre-reloc; + gpio-offset = <0x30 9>; + mode-gpio; + direction = <PIN_INPUT>; + }; + + gpio_b10 { + u-boot,dm-pre-reloc; + gpio-offset = <0x30 10>; + mode-gpio; + direction = <PIN_INPUT>; + }; + + gpio_b11 { + u-boot,dm-pre-reloc; + gpio-offset = <0x30 11>; + mode-gpio; + direction = <PIN_INPUT>; + }; + + gpio_b25 { + gpio-offset = <0x30 25>; + mode-gpio; + direction = <PIN_INPUT>; + }; + + gpio_b28 { + gpio-offset = <0x30 28>; + mode-gpio; + direction = <PIN_OUTPUT>; + output-value = <1>; + }; + + }; + pci { compatible = "pci-x86"; #address-cells = <3>;