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

From: Peng Fan
Date: Wed Nov 13 2019 - 05:02:15 EST


From: Peng Fan <peng.fan@xxxxxxx>

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

Signed-off-by: Peng Fan <peng.fan@xxxxxxx>
---
drivers/clk/imx/clk-composite-8m.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

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);

--
2.16.4