From 5d11fd2a919b153c68cda42c175b4e45668654a9 Mon Sep 17 00:00:00 2001 From: Gabor Juhos Date: Mon, 28 Oct 2024 19:48:17 +0100 Subject: [PATCH] clk: qcom: gcc-ipq6018: remove alpha values from NSS Crypto PLL's config Since both the 'alpha' and 'alpha_hi' members of the configuration is initialized with zero values, the output rate of the PLL will be the same whether alpha mode is enabled or not. Remove the initialization of the alpha* members to make it clear that alpha mode is not required to get the desired output rate. Despite that enabling alpha mode is not needed for the initial configuration, the set_rate() op might require that it is enabled already. In this particular case however, the clk_alpha_pll_set_rate() function will get reset the ALPHA_EN bit when the PLL's rate changes, so dropping 'alpha_en_mask' is safe. While at it, also add a comment to indicate the frequency the PLL runs at with the current configuration. No functional changes, the PLL runs at 1.2 GHz both before and after the change. Tested on Xiaomi Mi Router AX1800 (IPQ6018, out-of-tree board). Reviewed-by: Dmitry Baryshkov Signed-off-by: Gabor Juhos Link: https://lore.kernel.org/r/20241028-alpha-mode-cleanup-v2-3-9bc6d712bd76@gmail.com Signed-off-by: Bjorn Andersson --- drivers/clk/qcom/gcc-ipq6018.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/clk/qcom/gcc-ipq6018.c b/drivers/clk/qcom/gcc-ipq6018.c index ab0f7fc665a9..d861191b0c85 100644 --- a/drivers/clk/qcom/gcc-ipq6018.c +++ b/drivers/clk/qcom/gcc-ipq6018.c @@ -4194,10 +4194,9 @@ static const struct alpha_pll_config ubi32_pll_config = { .test_ctl_hi_val = 0x4000, }; +/* 1200 MHz configuration */ static const struct alpha_pll_config nss_crypto_pll_config = { .l = 0x32, - .alpha = 0x0, - .alpha_hi = 0x0, .config_ctl_val = 0x4001055b, .main_output_mask = BIT(0), .pre_div_val = 0x0, @@ -4206,7 +4205,6 @@ static const struct alpha_pll_config nss_crypto_pll_config = { .post_div_mask = GENMASK(11, 8), .vco_mask = GENMASK(21, 20), .vco_val = 0x0, - .alpha_en_mask = BIT(24), }; static struct clk_hw *gcc_ipq6018_hws[] = { -- 2.50.1