Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit bac135da authored by Jerome Brunet's avatar Jerome Brunet Committed by Ulf Hansson
Browse files

mmc: meson-gx: change default tx phase 



Initial default tx phase was set to 0 while the datasheet recommends 270.
Some cards fails to initialize with this setting and eMMC mode DDR52 does
not work.

Changing this setting to 270 fixes these issues, without any regression
so far

Reviewed-by: default avatarKevin Hilman <khilman@baylibre.com>
Signed-off-by: default avatarJerome Brunet <jbrunet@baylibre.com>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent b1231b2f

drivers/mmc/host/meson-gx-mmc.c

+7 −1
Original line number Diff line number Diff line
@@ -1156,8 +1156,14 @@ static int meson_mmc_probe(struct platform_device *pdev) 
	if (ret)

		goto free_host;



	/*

	 * Set phases : These values are mostly the datasheet recommended ones

	 * except for the Tx phase. Datasheet recommends 180 but some cards

	 * fail at initialisation with it. 270 works just fine, it fixes these

	 * initialisation issues and enable eMMC DDR52 mode.

	 */

	host->tp.core_phase = 180;

	host->tp.tx_phase = 0;

	host->tp.tx_phase = 270;

	host->tp.rx_phase = 0;



	ret = meson_mmc_clk_init(host);