Commit efc2b830 authored Oct 03, 2017 by Subhash Jadavani Committed by Can Guo Nov 13, 2017

scsi: ufs: msm: skip DME_HW_CGC_EN set for specific UFS host controller



For specific UFS host controllers, they should be not writing 1 to
DME_HW_CGC_EN during init sequence (since default value is 0). This change
skips setting DME_HW_CGC_EN for specific UFS host controllers.

Change-Id: I4ee70b7991a79a94b6bebaa840876e2effb0dc4e
Signed-off-by: Can Guo <cang@codeaurora.org>

parent 28bb5f16

drivers/scsi/ufs/ufs-qcom.c

+9 −3

Original line number	Diff line number	Diff line
		@@ -344,9 +344,15 @@ static int ufs_qcom_enable_hw_clk_gating(struct ufs_hba *hba)
		if (err)
		goto out;

		if (!((host->hw_ver.major == 4) && (host->hw_ver.minor == 0) &&
		(host->hw_ver.step == 0))) {
		err = ufshcd_dme_rmw(hba, DME_VS_CORE_CLK_CTRL_DME_HW_CGC_EN,
		DME_VS_CORE_CLK_CTRL_DME_HW_CGC_EN,
		DME_VS_CORE_CLK_CTRL);
		} else {
		dev_err(hba->dev, "%s: skipping DME_HW_CGC_EN set\n",
		__func__);
		}
		out:
		return err;
		}