diff options
| author | Yin, Fengwei <fengwei.yin@linaro.org> | 2015-05-14 23:09:42 +0800 |
|---|---|---|
| committer | Yin, Fengwei <fengwei.yin@linaro.org> | 2015-07-17 10:28:43 +0800 |
| commit | 35c7c2d6b01a09ad23a1f1b3cb66aa7c936cb69c (patch) | |
| tree | 92e8367187943a08b13ab1a61b727aebc95ab2e0 | |
| parent | ac02856f43c9d6d8c748f772c990ab62b628dcb1 (diff) | |
Enable xo clock before operate wcnss registers.
Signed-off-by: Yin, Fengwei <fengwei.yin@linaro.org>
| -rw-r--r-- | drivers/net/wireless/ath/wcn36xx/wcnss_core.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/wcn36xx/wcnss_core.c b/drivers/net/wireless/ath/wcn36xx/wcnss_core.c index 66e31440f3c3..707e6288f4fe 100644 --- a/drivers/net/wireless/ath/wcn36xx/wcnss_core.c +++ b/drivers/net/wireless/ath/wcn36xx/wcnss_core.c @@ -15,8 +15,22 @@ static int wcnss_core_config(struct platform_device *pdev, void __iomem *base) { int ret = 0; + struct clk *clk = NULL; u32 value; + clk = clk_get(&pdev->dev, "xo"); + if (IS_ERR(clk)) { + dev_err(&pdev->dev, "can't get clock xo\n"); + return PTR_ERR(clk); + } + + ret = clk_prepare_enable(clk); + if (ret) { + dev_err(&pdev->dev, "clock xo enabling failed\n"); + clk_put(clk); + return ret; + } + value = readl_relaxed(base + SPARE_OFFSET); value |= WCNSS_FW_DOWNLOAD_ENABLE; writel_relaxed(value, base + SPARE_OFFSET); @@ -57,9 +71,12 @@ static int wcnss_core_config(struct platform_device *pdev, void __iomem *base) value &= ~(WCNSS_PMU_CFG_GC_BUS_MUX_SEL_TOP | WCNSS_PMU_CFG_IRIS_XO_CFG); writel_relaxed(value, base + PMU_OFFSET); + clk_disable_unprepare(clk); msleep(200); + clk_put(clk); + return ret; } |