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Commit cccfa88f authored by Asutosh Das's avatar Asutosh Das
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Revert "UPSTREAM: mmc: sdhci-msm: Don't enable PWRSAVE_DLL for certain sdhc hosts" 



This reverts commit dfc165df.

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: default avatarAsutosh Das <asutoshd@codeaurora.org>
parent 29c17ed5

drivers/mmc/host/sdhci-msm.c

+3 −15
Original line number Diff line number Diff line
@@ -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 = readl_relaxed(host->ioaddr + msm_offset->core_vendor_spec3);

	config |= CORE_PWRSAVE_DLL;

		writel_relaxed(config, host->ioaddr +

				msm_offset->core_vendor_spec3);

	}

	writel_relaxed(config, host->ioaddr + msm_offset->core_vendor_spec3);



	/*

	 * Drain writebuffer to ensure above DLL calibration