diff mbox

[v4,5/5] mmc: sdhci-of-esdhc: add delay between tuning cycles

Message ID 1491887431-31894-6-git-send-email-yangbo.lu@nxp.com (mailing list archive)
State Superseded, archived
Headers show

Commit Message

Yangbo Lu April 11, 2017, 5:10 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>
---
Changes for v2:
	- None
Changes for v3:
	- Used a host member for tuning delay instead of a quirk.
Changes for v4:
	- None
---
 drivers/mmc/host/sdhci-of-esdhc.c | 1 +
 1 file changed, 1 insertion(+)

Comments

Adrian Hunter April 20, 2017, 7:35 a.m. UTC | #1
On 11/04/17 08:10, Yangbo Lu wrote:
> 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
> ---
>  drivers/mmc/host/sdhci-of-esdhc.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
> index 80dc802..49ac197 100644
> --- a/drivers/mmc/host/sdhci-of-esdhc.c
> +++ b/drivers/mmc/host/sdhci-of-esdhc.c
> @@ -809,6 +809,7 @@ static int sdhci_esdhc_probe(struct platform_device *pdev)
>  	host->mmc_host_ops.start_signal_voltage_switch =
>  		esdhc_signal_voltage_switch;
>  	host->mmc_host_ops.execute_tuning = esdhc_execute_tuning;
> +	host->tuning_delay = 1;
>  
>  	esdhc_init(pdev, host);
>  
> 

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diff mbox

Patch

diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
index 80dc802..49ac197 100644
--- a/drivers/mmc/host/sdhci-of-esdhc.c
+++ b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -809,6 +809,7 @@  static int sdhci_esdhc_probe(struct platform_device *pdev)
 	host->mmc_host_ops.start_signal_voltage_switch =
 		esdhc_signal_voltage_switch;
 	host->mmc_host_ops.execute_tuning = esdhc_execute_tuning;
+	host->tuning_delay = 1;
 
 	esdhc_init(pdev, host);