[v4,3/9] clk: qcom: apss-ipq-pll: Use stromer plus ops for stromer plus pll

Message ID 9ea8deab1c8b49008acb91510e9e1b1c1e0b4f3d.1697694811.git.quic_varada@quicinc.com
State New
Headers
Series Enable cpufreq for IPQ5332 & IPQ9574 |

Commit Message

Varadarajan Narayanan Oct. 19, 2023, 8:40 a.m. UTC
  The set rate and determine rate operations are different between
Stromer and Stromer Plus PLLs. Since the programming sequence is
different, the PLLs dont get configured properly and random,
inexplicable crash/freeze is seen. Hence, use stromer plus ops
for ipq_pll_stromer_plus.

Acked-by: Stephen Boyd <sboyd@kernel.org>
Fixes: c7ef7fbb1ccf ("clk: qcom: apss-ipq-pll: add support for IPQ5332")
Signed-off-by: Kathiravan T <quic_kathirav@quicinc.com>
Signed-off-by: Varadarajan Narayanan <quic_varada@quicinc.com>
---
v4:	Update commit log to include
		"What goes wrong if we don't have this patch?"
v2:	Add Fixes tag
---
 drivers/clk/qcom/apss-ipq-pll.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
  

Comments

Dmitry Baryshkov Oct. 19, 2023, 1:13 p.m. UTC | #1
On Thu, 19 Oct 2023 at 11:42, Varadarajan Narayanan
<quic_varada@quicinc.com> wrote:
>
> The set rate and determine rate operations are different between
> Stromer and Stromer Plus PLLs. Since the programming sequence is
> different, the PLLs dont get configured properly and random,
> inexplicable crash/freeze is seen. Hence, use stromer plus ops
> for ipq_pll_stromer_plus.
>
> Acked-by: Stephen Boyd <sboyd@kernel.org>
> Fixes: c7ef7fbb1ccf ("clk: qcom: apss-ipq-pll: add support for IPQ5332")
> Signed-off-by: Kathiravan T <quic_kathirav@quicinc.com>
> Signed-off-by: Varadarajan Narayanan <quic_varada@quicinc.com>
> ---
> v4:     Update commit log to include
>                 "What goes wrong if we don't have this patch?"
> v2:     Add Fixes tag
> ---
>  drivers/clk/qcom/apss-ipq-pll.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
  

Patch

diff --git a/drivers/clk/qcom/apss-ipq-pll.c b/drivers/clk/qcom/apss-ipq-pll.c
index e170331..18c4ffe 100644
--- a/drivers/clk/qcom/apss-ipq-pll.c
+++ b/drivers/clk/qcom/apss-ipq-pll.c
@@ -68,7 +68,7 @@  static struct clk_alpha_pll ipq_pll_stromer_plus = {
 				.fw_name = "xo",
 			},
 			.num_parents = 1,
-			.ops = &clk_alpha_pll_stromer_ops,
+			.ops = &clk_alpha_pll_stromer_plus_ops,
 		},
 	},
 };