[PATCH] Add dts info for wandboard GPIO lines.
From: Uwe Kleine-König <hidden>
Date: 2015-06-30 08:08:38
Hello, while starting to use the GPIO lines being available on the JP4 connector of the wand board I stumbled over this patch on the linux arm kernel mailing list: On Wed, Jul 31, 2013 at 05:40:47PM -0400, Michael Panetta wrote:
quoted hunk ↗ jump to hunk
diff --git a/arch/arm/boot/dts/imx6qdl-wandboard.dtsi b/arch/arm/boot/dts/imx6qdl-wandboard.dtsi index a55113e..b40bbe1 100644 --- a/arch/arm/boot/dts/imx6qdl-wandboard.dtsi +++ b/arch/arm/boot/dts/imx6qdl-wandboard.dtsi@@ -84,6 +84,23 @@ >; }; }; + + gpio { + pinctrl_gpio: gpiogrp { + fsl,pins = < + MX6QDL_PAD_EIM_DA12__GPIO3_IO12 0x80000000 /* GPIO3_12 EDM pin 255 */
Looking at the "Wandboard User Guide, Revision B1"[1] I'd say EDM pin 255 on the board drives the signal GPIO3_11 and so TP128 on the board. Instead it's pad MX6QDL_PAD_EIM_DA11 (and so GPIO3_IO11) that is connected to EDM pin 256 which is called GPIO3_12 for the Wandboard. Unless I'm failing to read the schematics, this is an unfortunate naming mismatch that someone might want to fix?! Best regards Uwe PS: The patch was never applied to the mainline kernel. [1] http://www.wandboard.org/images/downloads/wbquad-revb1-userguide.pdf
+ MX6QDL_PAD_EIM_DA11__GPIO3_IO11 0x80000000 /* GPIO3_11 EDM pin 256 */ + MX6QDL_PAD_EIM_DA10__GPIO3_IO10 0x80000000 /* GPIO3_10 EDM pin 257 */ + MX6QDL_PAD_EIM_D27__GPIO3_IO27 0x80000000 /* GPIO3_27 EDM pin 258 */ + MX6QDL_PAD_EIM_D26__GPIO3_IO26 0x80000000 /* GPIO3_26 EDM pin 259 */ + MX6QDL_PAD_EIM_BCLK__GPIO6_IO31 0x80000000 /* GPIO6_31 EDM pin 260 */ + MX6QDL_PAD_EIM_DA8__GPIO3_IO08 0x80000000 /* GPIO3_8 EDM pin 261 */ + MX6QDL_PAD_ENET_RX_ER__GPIO1_IO24 0x80000000 /* GPIO1_24 EDM pin 262 */ + MX6QDL_PAD_GPIO_19__GPIO4_IO05 0x80000000 /* GPIO4_5 EDM pin 263 */ + MX6QDL_PAD_SD3_RST__GPIO7_IO08 0x80000000 /* GPIO7_8 EDM pin 264 */ + >; + }; + }; };
-- Pengutronix e.K. | Uwe Kleine-K?nig | Industrial Linux Solutions | http://www.pengutronix.de/ |