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| author | Lucas Stach <dev@lynxeye.de> | 2014-05-14 22:45:32 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2014-05-15 14:17:12 +0200 |
| commit | 17a72b1f16445cde1e78604f97b81b5a89e9b3b3 (patch) | |
| tree | e145e4958892a898b637be6aa265c50568bdb4a8 /drivers/mci/tegra-sdmmc.c | |
| parent | ee493a6152a57ca56cace80fada726e5bf4f4bd5 (diff) | |
| download | barebox-17a72b1f16445cde1e78604f97b81b5a89e9b3b3.tar.gz barebox-17a72b1f16445cde1e78604f97b81b5a89e9b3b3.tar.xz | |
mci: tegra: add reset control
Enable the driver to reset the device itself.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers/mci/tegra-sdmmc.c')
| -rw-r--r-- | drivers/mci/tegra-sdmmc.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/mci/tegra-sdmmc.c b/drivers/mci/tegra-sdmmc.c index e4d82197bd..0ea0b5ca4a 100644 --- a/drivers/mci/tegra-sdmmc.c +++ b/drivers/mci/tegra-sdmmc.c @@ -28,6 +28,7 @@ #include <mci.h> #include <of_gpio.h> #include <linux/clk.h> +#include <linux/reset.h> #include "sdhci.h" @@ -62,6 +63,7 @@ struct tegra_sdmmc_host { struct mci_host mci; void __iomem *regs; struct clk *clk; + struct reset_control *reset; int gpio_cd, gpio_pwr; }; #define to_tegra_sdmmc_host(mci) container_of(mci, struct tegra_sdmmc_host, mci) @@ -400,6 +402,10 @@ static int tegra_sdmmc_probe(struct device_d *dev) if (IS_ERR(host->clk)) return PTR_ERR(host->clk); + host->reset = reset_control_get(dev, NULL); + if (IS_ERR(host->reset)) + return PTR_ERR(host->reset); + host->regs = dev_request_mem_region(dev, 0); if (!host->regs) { dev_err(dev, "could not get iomem region\n"); @@ -430,6 +436,9 @@ static int tegra_sdmmc_probe(struct device_d *dev) } clk_enable(host->clk); + reset_control_assert(host->reset); + udelay(2); + reset_control_deassert(host->reset); mci->init = tegra_sdmmc_init; mci->card_present = tegra_sdmmc_card_present; |