A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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Revert "UPSTREAM: mmc: sdhci-msm: Don't enable PWRSAVE_DLL for certain sdhc hosts"

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This reverts commit dfc165dfbd.

This is a suspected change that's breaking suspend/resume in mainline.
Hence, revert this until the issue is fixed.

Change-Id: Ia92d64ba3121e01770b680478af1c2a65b49f48c
Signed-off-by: Asutosh Das <asutoshd@codeaurora.org>
This commit is contained in:
Asutosh Das 2020-07-26 08:24:20 -07:00
commit cccfa88f2c
1 changed files with 3 additions and 15 deletions
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18
drivers/mmc/host/sdhci-msm.c
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@ -1169,21 +1169,9 @@ static int sdhci_msm_cm_dll_sdc4_calibration(struct sdhci_host *host)
goto out;
}
/*
* Set CORE_PWRSAVE_DLL bit in CORE_VENDOR_SPEC3.
* When MCLK is gated OFF, it is not gated for less than 0.5us
* and MCLK must be switched on for at-least 1us before DATA
* starts coming. Controllers with 14lpp and later tech DLL cannot
* guarantee above requirement. So PWRSAVE_DLL should not be
* turned on for host controllers using this DLL.
*/
if (!msm_host->use_14lpp_dll_reset) {
config = readl_relaxed(host->ioaddr +
msm_offset->core_vendor_spec3);
config |= CORE_PWRSAVE_DLL;
writel_relaxed(config, host->ioaddr +
msm_offset->core_vendor_spec3);
}
config = readl_relaxed(host->ioaddr + msm_offset->core_vendor_spec3);
config |= CORE_PWRSAVE_DLL;
writel_relaxed(config, host->ioaddr + msm_offset->core_vendor_spec3);
/*
* Drain writebuffer to ensure above DLL calibration