Clear tuning_done flag while executing tuning to ensure vendor
specific HS400 settings are applied properly when the controller
is re-initialized in HS400 mode.
Without this, re-initialization of the qcom SDHC in HS400 mode fails
while resuming the driver from runtime-suspend or system-suspend.
Fixes:
ff06ce417828 ("mmc: sdhci-msm: Add HS400 platform support")
Cc: stable@vger.kernel.org
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>
Link: https://lore.kernel.org/r/1590678838-18099-1-git-send-email-vbadigan@codeaurora.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
/* Clock-Data-Recovery used to dynamically adjust RX sampling point */
msm_host->use_cdr = true;
+ /*
+ * Clear tuning_done flag before tuning to ensure proper
+ * HS400 settings.
+ */
+ msm_host->tuning_done = 0;
+
/*
* For HS400 tuning in HS200 timing requires:
* - select MCLK/2 in VENDOR_SPEC