Commit c34eda69 authored Aug 25, 2017 by Maxime Ripard Committed by Ulf Hansson Aug 30, 2017

mmc: sunxi: Reset the device at probe time



We might be into some troubles if the bootloader misconfigured the MMC
controller.

We currently only de-assert the reset line at probe time, which means that
if the device was already out of reset, we're going to keep whatever state
was set already.

Switch to a reset instead of the deassert to have a device in a pristine
state when we start operating.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

parent 734d21cc

drivers/mmc/host/sunxi-mmc.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1242,7 +1242,7 @@ static int sunxi_mmc_resource_request(struct sunxi_mmc_host *host,
		}

		if (!IS_ERR(host->reset)) {
		ret = reset_control_deassert(host->reset);
		ret = reset_control_reset(host->reset);
		if (ret) {
		dev_err(&pdev->dev, "reset err %d\n", ret);
		goto error_disable_clk_sample;