2023-09-14 08:06:21

by Kathiravan Thirumoorthy

Subject: [PATCH v2 02/11] clk: qcom: ipq6018: drop the CLK_SET_RATE_PARENT flag from PLL clocks

GPLL, NSS crypto PLL clock rates are fixed and shouldn't be scaled based
on the request from dependent clocks. Doing so will result in the
unexpected behaviour. So drop the CLK_SET_RATE_PARENT flag from the PLL
clocks.

Cc: [email protected]
Fixes: d9db07f088af ("clk: qcom: Add ipq6018 Global Clock Controller support")
Signed-off-by: Kathiravan Thirumoorthy <[email protected]>
---
Changes in V2:
- Include the stable mailing list
- Keep the CLK_SET_RATE_PARENT in UBI32 PLL, looks like these
PLL rates can be changed. So don't drop the flag.
---
drivers/clk/qcom/gcc-ipq6018.c | 6 ------
1 file changed, 6 deletions(-)

diff --git a/drivers/clk/qcom/gcc-ipq6018.c b/drivers/clk/qcom/gcc-ipq6018.c
index 6120fbbc5de0..f9494fa1b871 100644
--- a/drivers/clk/qcom/gcc-ipq6018.c
+++ b/drivers/clk/qcom/gcc-ipq6018.c
@@ -72,7 +72,6 @@ static struct clk_fixed_factor gpll0_out_main_div2 = {
&gpll0_main.clkr.hw },
.num_parents = 1,
.ops = &clk_fixed_factor_ops,
- .flags = CLK_SET_RATE_PARENT,
},
};

@@ -86,7 +85,6 @@ static struct clk_alpha_pll_postdiv gpll0 = {
&gpll0_main.clkr.hw },
.num_parents = 1,
.ops = &clk_alpha_pll_postdiv_ro_ops,
- .flags = CLK_SET_RATE_PARENT,
},
};

@@ -161,7 +159,6 @@ static struct clk_alpha_pll_postdiv gpll6 = {
&gpll6_main.clkr.hw },
.num_parents = 1,
.ops = &clk_alpha_pll_postdiv_ro_ops,
- .flags = CLK_SET_RATE_PARENT,
},
};

@@ -192,7 +189,6 @@ static struct clk_alpha_pll_postdiv gpll4 = {
&gpll4_main.clkr.hw },
.num_parents = 1,
.ops = &clk_alpha_pll_postdiv_ro_ops,
- .flags = CLK_SET_RATE_PARENT,
},
};

@@ -243,7 +239,6 @@ static struct clk_alpha_pll_postdiv gpll2 = {
&gpll2_main.clkr.hw },
.num_parents = 1,
.ops = &clk_alpha_pll_postdiv_ro_ops,
- .flags = CLK_SET_RATE_PARENT,
},
};

@@ -274,7 +269,6 @@ static struct clk_alpha_pll_postdiv nss_crypto_pll = {
&nss_crypto_pll_main.clkr.hw },
.num_parents = 1,
.ops = &clk_alpha_pll_postdiv_ro_ops,
- .flags = CLK_SET_RATE_PARENT,
},
};


--
2.34.1

2023-09-27 21:37:33

by Konrad Dybcio

Subject: Re: [PATCH v2 02/11] clk: qcom: ipq6018: drop the CLK_SET_RATE_PARENT flag from PLL clocks

On 14.09.2023 08:59, Kathiravan Thirumoorthy wrote:
> GPLL, NSS crypto PLL clock rates are fixed and shouldn't be scaled based
> on the request from dependent clocks. Doing so will result in the
> unexpected behaviour. So drop the CLK_SET_RATE_PARENT flag from the PLL
> clocks.
>
> Cc: [email protected]
> Fixes: d9db07f088af ("clk: qcom: Add ipq6018 Global Clock Controller support")
> Signed-off-by: Kathiravan Thirumoorthy <[email protected]>
> ---
Reviewed-by: Konrad Dybcio <[email protected]>

Konrad