diff options
| author | Jerome Brunet <[email protected]> | 2018-05-15 11:57:48 +0200 |
|---|---|---|
| committer | Ulf Hansson <[email protected]> | 2018-05-21 10:50:45 +0200 |
| commit | 19c6beaa064c4b198e7d774feab7a0851cf606a0 (patch) | |
| tree | 7edc008a25fbe2be5625f5d63e2c1acd0503ca5d | |
| parent | c5f9ae6cf2a6556399e8e3e1e28fc2af7065c672 (diff) | |
mmc: meson-gx: add device reset
Trigger the reset line of the mmc controller while probing, if available.
The reset should be optional for now, at least until all related DT nodes
have the reset property.
Reviewed-by: Kevin Hilman <[email protected]>
Signed-off-by: Jerome Brunet <[email protected]>
Signed-off-by: Ulf Hansson <[email protected]>
| -rw-r--r-- | drivers/mmc/host/meson-gx-mmc.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/mmc/host/meson-gx-mmc.c b/drivers/mmc/host/meson-gx-mmc.c index 55bbd67177df..c201c378537e 100644 --- a/drivers/mmc/host/meson-gx-mmc.c +++ b/drivers/mmc/host/meson-gx-mmc.c @@ -35,6 +35,7 @@ #include <linux/clk.h> #include <linux/clk-provider.h> #include <linux/regulator/consumer.h> +#include <linux/reset.h> #include <linux/interrupt.h> #include <linux/bitfield.h> #include <linux/pinctrl/consumer.h> @@ -1212,6 +1213,14 @@ static int meson_mmc_probe(struct platform_device *pdev) goto free_host; } + ret = device_reset_optional(&pdev->dev); + if (ret) { + if (ret != -EPROBE_DEFER) + dev_err(&pdev->dev, "device reset failed: %d\n", ret); + + return ret; + } + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); host->regs = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(host->regs)) { |