diff options
| author |   Jerome Brunet <jbrunet@baylibre.com> | 2018-05-15 11:57:48 +0200 |
|---|---|---|
| committer |   Ulf Hansson <ulf.hansson@linaro.org> | 2018-05-21 10:50:45 +0200 |
| commit | 19c6beaa064c4b198e7d774feab7a0851cf606a0 (patch) | |
| tree | 7edc008a25fbe2be5625f5d63e2c1acd0503ca5d /drivers/mmc | |
| parent | dt-bindings: mmc: meson-gx: add reset (diff) | |
| download | linux-dev-19c6beaa064c4b198e7d774feab7a0851cf606a0.tar.xz linux-dev-19c6beaa064c4b198e7d774feab7a0851cf606a0.zip | |
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 <khilman@baylibre.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
| -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)) { |