Messages in this thread Patch in this message | ![/](/images/icornerl.gif) | | From | Abel Vesa <> | Date | Thu, 18 Apr 2024 16:41:32 +0300 | Subject | [PATCH] clk: qcom: clk-alpha-pll: Skip reconfiguring the running Lucid Evo |
| |
The PLL0 is configured by the bootlader and is the parent of the mdp_clk_src. The Trion implementation of the configure function is already skipping this step if the PLL is enabled, so lets extend the same behavior to Lucid Evo variant.
Signed-off-by: Abel Vesa <abel.vesa@linaro.org> --- drivers/clk/qcom/clk-alpha-pll.c | 9 +++++++++ 1 file changed, 9 insertions(+)
diff --git a/drivers/clk/qcom/clk-alpha-pll.c b/drivers/clk/qcom/clk-alpha-pll.c index 8a412ef47e16..4c5aeccff0ef 100644 --- a/drivers/clk/qcom/clk-alpha-pll.c +++ b/drivers/clk/qcom/clk-alpha-pll.c @@ -2114,6 +2114,15 @@ void clk_lucid_evo_pll_configure(struct clk_alpha_pll *pll, struct regmap *regma { u32 lval = config->l; + /* + * If the bootloader left the PLL enabled it's likely that there are + * RCGs that will lock up if we disable the PLL below. + */ + if (trion_pll_is_enabled(pll, regmap)) { + pr_debug("Lucid Evo PLL is already enabled, skipping configuration\n"); + return; + } + lval |= TRION_PLL_CAL_VAL << LUCID_EVO_PLL_CAL_L_VAL_SHIFT; clk_alpha_pll_write_config(regmap, PLL_L_VAL(pll), lval); clk_alpha_pll_write_config(regmap, PLL_ALPHA_VAL(pll), config->alpha); --- base-commit: 4eab358930711bbeb85bf5ee267d0d42d3394c2c change-id: 20240418-clk-qcom-lucid-evo-skip-configuring-enabled-711b7e7835b0 Best regards, -- Abel Vesa <abel.vesa@linaro.org>
| ![\](/images/icornerr.gif) |