From: Vipul Kumar Samar <vipulkumar.samar@st.com>
Date: Thu, 8 Nov 2012 15:09:09 +0000 (+0530)
Subject: mmc: sdhci-spear: Initialize sdhci clk to 50 MHz
X-Git-Tag: firefly_0821_release~3680^2~1531^2~24
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=257f9df12307cb0239196d9ec18e2af12c52435e;p=firefly-linux-kernel-4.4.55.git

mmc: sdhci-spear: Initialize sdhci clk to 50 MHz

SPEAr sdhci driver expects the clock to be set to 50 MHz for proper
functioning.  This patch sets clk to 50 MHz in probe.

Signed-off-by: Vipul Kumar Samar <vipulkumar.samar@st.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
---

diff --git a/drivers/mmc/host/sdhci-spear.c b/drivers/mmc/host/sdhci-spear.c
index 6be89c032deb..fea8bf92efab 100644
--- a/drivers/mmc/host/sdhci-spear.c
+++ b/drivers/mmc/host/sdhci-spear.c
@@ -146,6 +146,11 @@ static int __devinit sdhci_probe(struct platform_device *pdev)
 		goto put_clk;
 	}
 
+	ret = clk_set_rate(sdhci->clk, 50000000);
+	if (ret)
+		dev_dbg(&pdev->dev, "Error setting desired clk, clk=%lu\n",
+				clk_get_rate(sdhci->clk));
+
 	if (np) {
 		sdhci->data = sdhci_probe_config_dt(pdev);
 		if (IS_ERR(sdhci->data)) {