Messages in this thread Patch in this message | | | From | Ben Chuang <> | Subject | [PATCH V7 1/5] mmc: sdhci: Change timeout of loop for checking internal clock stable | Date | Fri, 30 Aug 2019 10:23:10 +0800 |
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From: Ben Chuang <ben.chuang@genesyslogic.com.tw>
According to section 3.2.1 internal clock setup in SD Host Controller Simplified Specifications 4.20, the timeout of loop for checking internal clock stable is defined as 150ms.
Signed-off-by: Ben Chuang <ben.chuang@genesyslogic.com.tw> Co-developed-by: Michael K Johnson <johnsonm@danlj.org> Signed-off-by: Michael K Johnson <johnsonm@danlj.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> --- drivers/mmc/host/sdhci.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 59acf8e3331e..bed0760a6c2a 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -1636,8 +1636,8 @@ void sdhci_enable_clk(struct sdhci_host *host, u16 clk) clk |= SDHCI_CLOCK_INT_EN; sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); - /* Wait max 20 ms */ - timeout = ktime_add_ms(ktime_get(), 20); + /* Wait max 150 ms */ + timeout = ktime_add_ms(ktime_get(), 150); while (1) { bool timedout = ktime_after(ktime_get(), timeout); -- 2.22.1
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