[PATCH v2] arm: dts: sun7i-a20-bananapi: name the GPIO lines
From: Oleksij Rempel <hidden>
Date: 2016-08-05 08:06:44
Also in:
linux-devicetree
Subsystem:
the rest · Maintainer:
Linus Torvalds
Possibly related (same subject, not in this thread)
- 2017-04-28 · Re: [PATCH v2] arm: dts: sun7i-a20-bananapi: name the GPIO lines · Oleksij Rempel <hidden>
- 2017-04-28 · Re: [PATCH v2] arm: dts: sun7i-a20-bananapi: name the GPIO lines · Linus Walleij <hidden>
- 2017-04-28 · Re: [PATCH v2] arm: dts: sun7i-a20-bananapi: name the GPIO lines · Oleksij Rempel <hidden>
- 2016-08-08 · Re: [PATCH v2] arm: dts: sun7i-a20-bananapi: name the GPIO lines · Linus Walleij <hidden>
This names the GPIO lines on the Banana Pi board in accordance with the A20_Banana_Pi v1.4 Specification. This will make these line names reflect through to userspace so that they can easily be identified and used with the new character device ABI. Some care has been taken to name all lines, not just those used by the external connectors, also lines that are muxed into some other function than GPIO: these are named "[FOO]" so that users can see with lsgpio what all lines are used for. Ps: most of the text was taken from Linus Wallej patch. Cc: devicetree at vger.kernel.org Cc: Linus Walleij <redacted> Cc: linux-arm-kernel at lists.infradead.org Cc: Chen-Yu Tsai <redacted> Signed-off-by: Oleksij Rempel <redacted> --- arch/arm/boot/dts/sun7i-a20-bananapi.dts | 58 ++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+)
diff --git a/arch/arm/boot/dts/sun7i-a20-bananapi.dts b/arch/arm/boot/dts/sun7i-a20-bananapi.dts
index 67c8a76..81ecb89 100644
--- a/arch/arm/boot/dts/sun7i-a20-bananapi.dts
+++ b/arch/arm/boot/dts/sun7i-a20-bananapi.dts@@ -178,6 +178,64 @@ }; &pio { + /* + * Legend: proper name = the GPIO line is used as GPIO + * NC = not connected (not routed from the SoC) + * "[PER]" = pin is muxed for peripheral (not GPIO) + * "" = no idea, schematic doesn't say, could be + * unrouted (not connected to any external pin) + */ + gpio-line-names = + /* PA */ + "[ERXD3]", "[ERXD2]", "[ERXD1]", "[ERXD0]", "[ETXD3]", + "[ETXD2]", "[ETXD1]", "[ETXD0]", + "[ERXCK]", "[ERXERR]", "[ERXDV]", "[EMDC]", "[EMDIO]", + "[ETXEN]", "[ETXCK]", "[ECRS]", + "[ECOL]", "[ETXERR]", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", + /* PB */ + "[PMU-SCK]", "[PMU-SDA]", "", "", "", "NC", "NC", "NC", + "NC", "USB0-DRV", "NC", "NC", "NC", "NC", "", "", + "", "", "", "", "[SCL]", "[SDA]", "", "", + "", "", "", "", "", "", "", "", + /* PC */ + "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", + /* PD */ + "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", + /* PE */ + "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", + /* PF */ + "[SD0-D1]", "[SD0-D0]", "[SD0-CLK]", "[SD0-CMD]", "[SD0-D3]", + "[SD0-D2]", "", "", + "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", + /* PG */ + "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "", + /* PH */ + "TXD0", "RXD0", "IO-1", "IO-8", "USB0-IDDET", "IO-7", "", "", + "", "", "SD0-DET", "", "", "", "", "", + "NC", "", "", "", "IO-4", "IO-5", "NC", "EMAC-PWR-EN", + "LED1", "NC", "NC", "NC", "", "", "", "", + /* PI */ + "", "", "", "[IO-GCLK]", "NC", "NC", "NC", "NC", + "NC", "NC", "[SPI-CE0]", "[SPI-CLK]", "[SPI-MOSI]", + "[SPI-MISO]", "[SPI-CE1]", "NC", + "IO-6", "IO-3", "IO-2", "IO-0", "", "", "", "", + "", "", "", "", "", "", "", ""; + usb0_id_detect_pin: usb0_id_detect_pin at 0 { allwinner,pins = "PH4"; allwinner,function = "gpio_in";
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