diff mbox series

[v2,1/6] clk: qcom: alpha-pll: Fix the pll post div mask and shift

Message ID 20240702-camcc-support-sm8150-v2-1-4baf54ec7333@quicinc.com
State New
Headers show
Series clk: qcom: sm8150: Add camera clock controller support for SM8150 | expand

Commit Message

Satya Priya Kakitapalli July 2, 2024, 3:50 p.m. UTC
The PLL_POST_DIV_MASK should be 0 to (width - 1) bits. Fix it.
Also, correct the pll postdiv shift used in trion pll postdiv
set rate API. The shift value is not same for different types of
plls and should be taken from the pll's .post_div_shift member.

Fixes: 1c3541145cbf ("clk: qcom: support for 2 bit PLL post divider")
Cc: stable@vger.kernel.org
Signed-off-by: Satya Priya Kakitapalli <quic_skakitap@quicinc.com>
---
 drivers/clk/qcom/clk-alpha-pll.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

Comments

Dmitry Baryshkov July 3, 2024, 10:01 a.m. UTC | #1
On Tue, Jul 02, 2024 at 09:20:39PM GMT, Satya Priya Kakitapalli wrote:
> The PLL_POST_DIV_MASK should be 0 to (width - 1) bits. Fix it.
> Also, correct the pll postdiv shift used in trion pll postdiv
> set rate API. The shift value is not same for different types of
> plls and should be taken from the pll's .post_div_shift member.

Two separate commits for two different fixes, please.

> 
> Fixes: 1c3541145cbf ("clk: qcom: support for 2 bit PLL post divider")
> Cc: stable@vger.kernel.org
> Signed-off-by: Satya Priya Kakitapalli <quic_skakitap@quicinc.com>
> ---
>  drivers/clk/qcom/clk-alpha-pll.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/clk/qcom/clk-alpha-pll.c b/drivers/clk/qcom/clk-alpha-pll.c
> index 8a412ef47e16..6107c144c0f5 100644
> --- a/drivers/clk/qcom/clk-alpha-pll.c
> +++ b/drivers/clk/qcom/clk-alpha-pll.c
> @@ -40,7 +40,7 @@
>  
>  #define PLL_USER_CTL(p)		((p)->offset + (p)->regs[PLL_OFF_USER_CTL])
>  # define PLL_POST_DIV_SHIFT	8
> -# define PLL_POST_DIV_MASK(p)	GENMASK((p)->width, 0)
> +# define PLL_POST_DIV_MASK(p)	GENMASK((p)->width - 1, 0)
>  # define PLL_ALPHA_EN		BIT(24)
>  # define PLL_ALPHA_MODE		BIT(25)
>  # define PLL_VCO_SHIFT		20
> @@ -1496,8 +1496,8 @@ clk_trion_pll_postdiv_set_rate(struct clk_hw *hw, unsigned long rate,
>  	}
>  
>  	return regmap_update_bits(regmap, PLL_USER_CTL(pll),
> -				  PLL_POST_DIV_MASK(pll) << PLL_POST_DIV_SHIFT,
> -				  val << PLL_POST_DIV_SHIFT);
> +				  PLL_POST_DIV_MASK(pll) << pll->post_div_shift,
> +				  val << pll->post_div_shift);
>  }
>  
>  const struct clk_ops clk_alpha_pll_postdiv_trion_ops = {
> 
> -- 
> 2.25.1
>
diff mbox series

Patch

diff --git a/drivers/clk/qcom/clk-alpha-pll.c b/drivers/clk/qcom/clk-alpha-pll.c
index 8a412ef47e16..6107c144c0f5 100644
--- a/drivers/clk/qcom/clk-alpha-pll.c
+++ b/drivers/clk/qcom/clk-alpha-pll.c
@@ -40,7 +40,7 @@ 
 
 #define PLL_USER_CTL(p)		((p)->offset + (p)->regs[PLL_OFF_USER_CTL])
 # define PLL_POST_DIV_SHIFT	8
-# define PLL_POST_DIV_MASK(p)	GENMASK((p)->width, 0)
+# define PLL_POST_DIV_MASK(p)	GENMASK((p)->width - 1, 0)
 # define PLL_ALPHA_EN		BIT(24)
 # define PLL_ALPHA_MODE		BIT(25)
 # define PLL_VCO_SHIFT		20
@@ -1496,8 +1496,8 @@  clk_trion_pll_postdiv_set_rate(struct clk_hw *hw, unsigned long rate,
 	}
 
 	return regmap_update_bits(regmap, PLL_USER_CTL(pll),
-				  PLL_POST_DIV_MASK(pll) << PLL_POST_DIV_SHIFT,
-				  val << PLL_POST_DIV_SHIFT);
+				  PLL_POST_DIV_MASK(pll) << pll->post_div_shift,
+				  val << pll->post_div_shift);
 }
 
 const struct clk_ops clk_alpha_pll_postdiv_trion_ops = {