diff options
| author | Pali Rohár <pali@kernel.org> | 2022-03-18 15:14:41 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-04-20 09:08:29 +0200 |
| commit | 053435146f9eca9d12eab9cecdb7ddb7e8a261d1 (patch) | |
| tree | fceb379d5379df7619712eb1e5c80c30fe3d9e94 | |
| parent | dcf6be17b5c53b741898d2223b23e66d682de300 (diff) | |
Revert "mmc: sdhci-xenon: fix annoying 1.8V regulator warning"
commit 7e2646ed47542123168d43916b84b954532e5386 upstream.
This reverts commit bb32e1987bc55ce1db400faf47d85891da3c9b9f.
Commit 1a3ed0dc3594 ("mmc: sdhci-xenon: fix 1.8v regulator stabilization")
contains proper fix for the issue described in commit bb32e1987bc5 ("mmc:
sdhci-xenon: fix annoying 1.8V regulator warning").
Fixes: 8d876bf472db ("mmc: sdhci-xenon: wait 5ms after set 1.8V signal enable")
Cc: stable@vger.kernel.org # 1a3ed0dc3594 ("mmc: sdhci-xenon: fix 1.8v regulator stabilization")
Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Marek Behún <kabel@kernel.org>
Reviewed-by: Marcin Wojtas <mw@semihalf.com>
Link: https://lore.kernel.org/r/20220318141441.32329-1-pali@kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/mmc/host/sdhci-xenon.c | 10 |
1 files changed, 0 insertions, 10 deletions
diff --git a/drivers/mmc/host/sdhci-xenon.c b/drivers/mmc/host/sdhci-xenon.c index ca34fa424634..bd7d15936836 100644 --- a/drivers/mmc/host/sdhci-xenon.c +++ b/drivers/mmc/host/sdhci-xenon.c @@ -243,16 +243,6 @@ static void xenon_voltage_switch(struct sdhci_host *host) { /* Wait for 5ms after set 1.8V signal enable bit */ usleep_range(5000, 5500); - - /* - * For some reason the controller's Host Control2 register reports - * the bit representing 1.8V signaling as 0 when read after it was - * written as 1. Subsequent read reports 1. - * - * Since this may cause some issues, do an empty read of the Host - * Control2 register here to circumvent this. - */ - sdhci_readw(host, SDHCI_HOST_CONTROL2); } static const struct sdhci_ops sdhci_xenon_ops = { |