linux-kernel - [PATCH 1/5] clk: qcom: apss-ipq-pll: drop 'alpha_en

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Message-Id: <20241021-alpha-mode-cleanup-v1-1-55df8ed73645@gmail.com>
Date: Mon, 21 Oct 2024 22:21:57 +0200
From: Gabor Juhos <j4g8y7@...il.com>
To: Bjorn Andersson <andersson@...nel.org>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Gabor Juhos <j4g8y7@...il.com>
Subject: [PATCH 1/5] clk: qcom: apss-ipq-pll: drop 'alpha_en_mask' from
 IPQ5018 PLL config

Since neither 'alpha' nor 'alpha_hi' is defined in the configuration,
those will be initialized with zero values  implicitly. By using zero
alpha values, the output rate of the PLL will be the same whether
alpha mode is enabled or not.

Remove the superfluous initialization of the 'alpha_en_mask' member
to make it clear that enabling alpha mode is not required to get the
desired output rate.

No functional changes, the initial rate of the PLL is the same both
before and after the patch.

Tested on TP-Link Archer AX55 v1 (IPQ5018).

Signed-off-by: Gabor Juhos <j4g8y7@...il.com>
---
 drivers/clk/qcom/apss-ipq-pll.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/clk/qcom/apss-ipq-pll.c b/drivers/clk/qcom/apss-ipq-pll.c
index e8632db2c542806e9527a22b54fe169e3e398a7a..dec2a5019cc77bf60142a86453883e336afc860f 100644
--- a/drivers/clk/qcom/apss-ipq-pll.c
+++ b/drivers/clk/qcom/apss-ipq-pll.c
@@ -73,7 +73,6 @@ static const struct alpha_pll_config ipq5018_pll_config = {
 	.main_output_mask = BIT(0),
 	.aux_output_mask = BIT(1),
 	.early_output_mask = BIT(3),
-	.alpha_en_mask = BIT(24),
 	.status_val = 0x3,
 	.status_mask = GENMASK(10, 8),
 	.lock_det = BIT(2),

-- 
2.47.0