openwrt/target/linux/ipq806x/patches-5.15/122-01-clk-qcom-clk-krait-fix-wrong-div2-functions.patch

From 2acc3260050cf17d72ec5fb7a00cd91cf53ef5b6 Mon Sep 17 00:00:00 2001
From: Christian Marangi <ansuelsmth@gmail.com>
Date: Fri, 23 Sep 2022 18:42:29 +0200
Subject: [PATCH 1/4] clk: qcom: clk-krait: fix wrong div2 functions

Currently div2 value is applied to the wrong bits. This is caused by a
bug in the code where the shift is done only for lpl, for anything
else the mask is not shifted to the correct bits.

Fix this by correctly shift if lpl is not supported.

Fixes: 4d7dc77babfe ("clk: qcom: Add support for Krait clocks")
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
---
 drivers/clk/qcom/clk-krait.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/clk/qcom/clk-krait.c b/drivers/clk/qcom/clk-krait.c
index 45da736bd5f4..293a9dfa7151 100644
--- a/drivers/clk/qcom/clk-krait.c
+++ b/drivers/clk/qcom/clk-krait.c
@@ -114,6 +114,8 @@ static int krait_div2_set_rate(struct clk_hw *hw, unsigned long rate,
 
 	if (d->lpl)
 		mask = mask << (d->shift + LPL_SHIFT) | mask << d->shift;
+	else
+		mask <<= d->shift;
 
 	spin_lock_irqsave(&krait_clock_reg_lock, flags);
 	val = krait_get_l2_indirect_reg(d->offset);
-- 
2.37.2