[v5,5/5] mmc: sdhci-of-esdhc: add delay between tuning cycles
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Message ID 1492676084-28218-6-git-send-email-yangbo.lu@nxp.com
State Accepted, archived
Headers show

Commit Message

Y.b. Lu April 20, 2017, 8:14 a.m. UTC
It's observed that eSDHC needed delay between tuning cycles for
HS200 successful tuning. This patch is to set 1ms delay for that.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Changes for v2:
	- None
Changes for v3:
	- Used a host member for tuning delay instead of a quirk.
Changes for v4:
	- None
Changes for v5:
	- Added Adrian's ACK
 drivers/mmc/host/sdhci-of-esdhc.c | 1 +
 1 file changed, 1 insertion(+)

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diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
index 607e512..7518360 100644
--- a/drivers/mmc/host/sdhci-of-esdhc.c
+++ b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -810,6 +810,7 @@  static int sdhci_esdhc_probe(struct platform_device *pdev)
 	host->mmc_host_ops.start_signal_voltage_switch =
 	host->mmc_host_ops.execute_tuning = esdhc_execute_tuning;
+	host->tuning_delay = 1;
 	esdhc_init(pdev, host);