linux/arch/arm/boot/dts/imx6qdl-wandboard-revb1.dtsi
Fabio Estevam 6e1386b2ee ARM: dts: imx6qdl-wandboard: Let the codec control MCLK pinctrl
sgtl5000 codec needs MCLK clock to be present so that it can
successfully read/write via I2C.

In the case of wandboard, MCLK is provided via
MX6QDL_PAD_GPIO_0__CCM_CLKO1 pad.

Move the MCLK pinctrl from hog group to the codec group, so that the
codec clock can be present prior to reading the codec ID.

This avoids the following error that happens from time to time:

[    2.484443] sgtl5000 1-000a: Error reading chip id -6

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2018-04-16 15:10:52 +08:00

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/*
* Copyright 2013 Freescale Semiconductor, Inc.
*
* Author: Fabio Estevam <fabio.estevam@freescale.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#include "imx6qdl-wandboard.dtsi"
&iomuxc {
pinctrl-0 = <&pinctrl_hog>;
imx6qdl-wandboard {
pinctrl_hog: hoggrp {
fsl,pins = <
MX6QDL_PAD_GPIO_2__GPIO1_IO02 0x80000000 /* uSDHC1 CD */
MX6QDL_PAD_EIM_DA9__GPIO3_IO09 0x80000000 /* uSDHC3 CD */
MX6QDL_PAD_EIM_EB1__GPIO2_IO29 0x0f0b0 /* WL_REF_ON */
MX6QDL_PAD_EIM_A25__GPIO5_IO02 0x0f0b0 /* WL_RST_N */
MX6QDL_PAD_ENET_RXD1__GPIO1_IO26 0x000b0 /* WL_REG_ON */
MX6QDL_PAD_ENET_TXD1__GPIO1_IO29 0x80000000 /* WL_HOST_WAKE */
MX6QDL_PAD_ENET_TXD0__GPIO1_IO30 0x80000000 /* WL_WAKE */
MX6QDL_PAD_EIM_D29__GPIO3_IO29 0x80000000 /* RGMII_nRST */
MX6QDL_PAD_EIM_DA13__GPIO3_IO13 0x80000000 /* BT_ON */
MX6QDL_PAD_EIM_DA14__GPIO3_IO14 0x80000000 /* BT_WAKE */
MX6QDL_PAD_EIM_DA15__GPIO3_IO15 0x80000000 /* BT_HOST_WAKE */
>;
};
};
};
&usdhc2 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usdhc2>;
non-removable;
status = "okay";
};