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mmc: sdhci-msm: Override DLL_CONFIG only if the valid value is supplied

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During DLL initialization, the DLL_CONFIG register value would be
updated with the value supplied from the device-tree.

Override this register only if a valid value is supplied.

Fixes: 03591160ca ("mmc: sdhci-msm: Read and use DLL Config property from device tree file")
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>
Link: https://lore.kernel.org/r/1594213888-2780-1-git-send-email-vbadigan@codeaurora.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Veerabhadrarao Badiganti 2020-07-08 18:41:19 +05:30 committed by Ulf Hansson
parent f8884711f7
commit 3ec2d5113e
1 changed files with 3 additions and 2 deletions
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5
drivers/mmc/host/sdhci-msm.c
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@ -618,8 +618,9 @@ static int msm_init_cm_dll(struct sdhci_host *host)
config &= ~CORE_CLK_PWRSAVE;
writel_relaxed(config, host->ioaddr + msm_offset->core_vendor_spec);
config = msm_host->dll_config;
writel_relaxed(config, host->ioaddr + msm_offset->core_dll_config);
if (msm_host->dll_config)
writel_relaxed(msm_host->dll_config,
host->ioaddr + msm_offset->core_dll_config);
if (msm_host->use_14lpp_dll_reset) {
config = readl_relaxed(host->ioaddr +