diff options
| author | Tim Harvey <tharvey@gateworks.com> | 2016-05-24 11:03:55 -0700 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2016-05-31 17:25:31 +0200 |
| commit | f17a9af84645f5b820da2e7d017b014923ce1b88 (patch) | |
| tree | c3ba568cd60d1b3525c8774140a43021ed5b3d60 /board/gateworks/gw_ventana/common.c | |
| parent | 83e00f193e766337254c490c2b28118b75cc575a (diff) | |
| download | u-boot-imx-f17a9af84645f5b820da2e7d017b014923ce1b88.zip u-boot-imx-f17a9af84645f5b820da2e7d017b014923ce1b88.tar.gz u-boot-imx-f17a9af84645f5b820da2e7d017b014923ce1b88.tar.bz2 | |
imx: ventana: enable pwm device-tree property based on hwconfig
Most Ventana boards have a connector with off-board digital-I/O signals
including some that can be pinmuxed as either a PWM or a GPIO. The hwconfig
env variable is used to configure these and they will be pinmuxed according
to this configuration in the bootloader.
This patch adds a device-tree fixup that will enable the pwm controller
nodes appropriately for digital-I/O's that are configured as pwm via hwconfig
so that the pin can be used with the Linux kernel /sys/class/pwm API.
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Diffstat (limited to 'board/gateworks/gw_ventana/common.c')
| -rw-r--r-- | board/gateworks/gw_ventana/common.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/board/gateworks/gw_ventana/common.c b/board/gateworks/gw_ventana/common.c index 7610381..44ee73f 100644 --- a/board/gateworks/gw_ventana/common.c +++ b/board/gateworks/gw_ventana/common.c @@ -762,6 +762,11 @@ void setup_board_gpio(int board, struct ventana_board_info *info) gpio_direction_input(cfg->gpio_param); } else if (hwconfig_subarg_cmp(arg, "mode", "pwm") && cfg->pwm_padmux) { + if (!cfg->pwm_param) { + printf("DIO%d: Error: pwm config invalid\n", + i); + continue; + } if (!quiet) printf("DIO%d: pwm%d\n", i, cfg->pwm_param); imx_iomux_v3_setup_pad(cfg->pwm_padmux[cputype] | |