You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
62 lines
1.7 KiB
62 lines
1.7 KiB
From fcba369ee1af8657353bb1e37807aa492c462263 Mon Sep 17 00:00:00 2001
|
|
From: =?UTF-8?q?Emilio=20L=C3=B3pez?= <emilio@elopez.com.ar>
|
|
Date: Fri, 20 Sep 2013 20:29:17 -0300
|
|
Subject: [PATCH] clk: sunxi: Implement MMC phase control
|
|
MIME-Version: 1.0
|
|
Content-Type: text/plain; charset=UTF-8
|
|
Content-Transfer-Encoding: 8bit
|
|
|
|
Signed-off-by: Emilio López <emilio@elopez.com.ar>
|
|
---
|
|
drivers/clk/sunxi/clk-sunxi.c | 35 +++++++++++++++++++++++++++++++++++
|
|
1 file changed, 35 insertions(+)
|
|
|
|
diff --git a/drivers/clk/sunxi/clk-sunxi.c b/drivers/clk/sunxi/clk-sunxi.c
|
|
index 3283179..46a38b4 100644
|
|
--- a/drivers/clk/sunxi/clk-sunxi.c
|
|
+++ b/drivers/clk/sunxi/clk-sunxi.c
|
|
@@ -500,6 +500,41 @@ static void __init sun7i_a20_gmac_clk_setup(struct device_node *node)
|
|
|
|
|
|
/**
|
|
+ * clk_sunxi_mmc_phase_control() - configures MMC clock phase control
|
|
+ */
|
|
+
|
|
+void clk_sunxi_mmc_phase_control(struct clk_hw *hw, u8 sample, u8 output)
|
|
+{
|
|
+ #define to_clk_composite(_hw) container_of(_hw, struct clk_composite, hw)
|
|
+ #define to_clk_factors(_hw) container_of(_hw, struct clk_factors, hw)
|
|
+
|
|
+ struct clk_composite *composite = to_clk_composite(hw);
|
|
+ struct clk_hw *rate_hw = composite->rate_hw;
|
|
+ struct clk_factors *factors = to_clk_factors(rate_hw);
|
|
+ unsigned long flags = 0;
|
|
+ u32 reg;
|
|
+
|
|
+ if (factors->lock)
|
|
+ spin_lock_irqsave(factors->lock, flags);
|
|
+
|
|
+ reg = readl(factors->reg);
|
|
+
|
|
+ /* set sample clock phase control */
|
|
+ reg &= ~(0x7 << 20);
|
|
+ reg |= ((sample & 0x7) << 20);
|
|
+
|
|
+ /* set output clock phase control */
|
|
+ reg &= ~(0x7 << 8);
|
|
+ reg |= ((output & 0x7) << 8);
|
|
+
|
|
+ writel(reg, factors->reg);
|
|
+
|
|
+ if (factors->lock)
|
|
+ spin_unlock_irqrestore(factors->lock, flags);
|
|
+}
|
|
+
|
|
+
|
|
+/**
|
|
* sunxi_factors_clk_setup() - Setup function for factor clocks
|
|
*/
|
|
|
|
--
|
|
1.8.5.5
|
|
|
|
|