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authorLinus Walleij <linus.walleij@linaro.org>2021-06-30 13:24:08 +0300
committerUlf Hansson <ulf.hansson@linaro.org>2021-08-24 11:15:30 +0300
commit575cf1046923690c1821cd33c55dc641937404cf (patch)
tree6b19b9583b84e772e5a602fd45abe58050951ddb /drivers/mmc
parent29cef6d47b67c5408d816a6268763bf4dafcac4e (diff)
downloadlinux-575cf1046923690c1821cd33c55dc641937404cf.tar.xz
mmc: mmci: De-assert reset on probe
If we find a reset handle when probing the MMCI block, make sure the reset is de-asserted. It could happen that a hardware has reset asserted at boot. Cc: Russell King <linux@armlinux.org.uk> Cc: Yann Gautier <yann.gautier@foss.st.com> Cc: Ludovic Barre <ludovic.barre@st.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Tested-by: Yann Gautier <yann.gautier@foss.st.com> Link: https://lore.kernel.org/r/20210630102408.3543024-1-linus.walleij@linaro.org Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/host/mmci.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 984d35055156..3765e2f4ad98 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -2126,6 +2126,9 @@ static int mmci_probe(struct amba_device *dev,
ret = PTR_ERR(host->rst);
goto clk_disable;
}
+ ret = reset_control_deassert(host->rst);
+ if (ret)
+ dev_err(mmc_dev(mmc), "failed to de-assert reset\n");
/* Get regulators and the supported OCR mask */
ret = mmc_regulator_get_supply(mmc);