[2/2] clk: imx: composite-8m: use relaxed io api

Commit Message

Peng Fan Nov. 13, 2019, 10:02 a.m. UTC

From: Peng Fan <[e-mail]>

It is ok to use relaxed api here, no need to use stronger readl/writel

Signed-off-by: Peng Fan <[e-mail]>
---
 drivers/clk/imx/clk-composite-8m.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

Patch

diff --git a/drivers/clk/imx/clk-composite-8m.c b/drivers/clk/imx/clk-composite-8m.c
index 20f7c91c03d2..513dc57483d0 100644
--- a/drivers/clk/imx/clk-composite-8m.c
+++ b/drivers/clk/imx/clk-composite-8m.c
@@ -31,14 +31,14 @@  static unsigned long imx8m_clk_composite_divider_recalc_rate(struct clk_hw *hw,
 	unsigned int prediv_value;
 	unsigned int div_value;
 
-	prediv_value = readl(divider->reg) >> divider->shift;
+	prediv_value = readl_relaxed(divider->reg) >> divider->shift;
 	prediv_value &= clk_div_mask(divider->width);
 
 	prediv_rate = divider_recalc_rate(hw, parent_rate, prediv_value,
 						NULL, divider->flags,
 						divider->width);
 
-	div_value = readl(divider->reg) >> PCG_DIV_SHIFT;
+	div_value = readl_relaxed(divider->reg) >> PCG_DIV_SHIFT;
 	div_value &= clk_div_mask(PCG_DIV_WIDTH);
 
 	return divider_recalc_rate(hw, prediv_rate, div_value, NULL,
@@ -104,13 +104,13 @@  static int imx8m_clk_composite_divider_set_rate(struct clk_hw *hw,
 
 	spin_lock_irqsave(divider->lock, flags);
 
-	val = readl(divider->reg);
+	val = readl_relaxed(divider->reg);
 	val &= ~((clk_div_mask(divider->width) << divider->shift) |
 			(clk_div_mask(PCG_DIV_WIDTH) << PCG_DIV_SHIFT));
 
 	val |= (u32)(prediv_value  - 1) << divider->shift;
 	val |= (u32)(div_value - 1) << PCG_DIV_SHIFT;
-	writel(val, divider->reg);
+	writel_relaxed(val, divider->reg);
 
 	spin_unlock_irqrestore(divider->lock, flags);