Linux clock framework development
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From: Chuan Liu via B4 Relay <devnull+chuan.liu.amlogic.com@kernel.org>
To: Neil Armstrong <neil.armstrong@linaro.org>,
	 Jerome Brunet <jbrunet@baylibre.com>,
	 Michael Turquette <mturquette@baylibre.com>,
	 Stephen Boyd <sboyd@kernel.org>,
	Kevin Hilman <khilman@baylibre.com>,
	 Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Cc: linux-amlogic@lists.infradead.org, linux-clk@vger.kernel.org,
	 linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org,  Chuan Liu <chuan.liu@amlogic.com>
Subject: [PATCH 1/3] clk: amlogic: Fix out-of-range PLL frequency setting
Date: Wed, 22 Oct 2025 14:58:51 +0800	[thread overview]
Message-ID: <20251022-optimize_pll_driver-v1-1-a275722fb6f4@amlogic.com> (raw)
In-Reply-To: <20251022-optimize_pll_driver-v1-0-a275722fb6f4@amlogic.com>

From: Chuan Liu <chuan.liu@amlogic.com>

meson_clk_get_pll_range_index incorrectly determines the maximum value
of 'm'.

Fixes: 8eed1db1adec6 ("clk: meson: pll: update driver for the g12a")
Signed-off-by: Chuan Liu <chuan.liu@amlogic.com>
---
 drivers/clk/meson/clk-pll.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/meson/clk-pll.c b/drivers/clk/meson/clk-pll.c
index 1ea6579a760f..b07e1eb19d12 100644
--- a/drivers/clk/meson/clk-pll.c
+++ b/drivers/clk/meson/clk-pll.c
@@ -191,7 +191,7 @@ static int meson_clk_get_pll_range_index(unsigned long rate,
 	*m = meson_clk_get_pll_range_m(rate, parent_rate, *n, pll);
 
 	/* the pre-divider gives a multiplier too big - stop */
-	if (*m >= (1 << pll->m.width))
+	if (*m > pll->range->max)
 		return -EINVAL;
 
 	return 0;

-- 
2.42.0



  reply	other threads:[~2025-10-22  6:59 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-10-22  6:58 [PATCH 0/3] clk: amlogic: optimize the PLL driver Chuan Liu via B4 Relay
2025-10-22  6:58 ` Chuan Liu via B4 Relay [this message]
2025-10-22 11:57   ` [PATCH 1/3] clk: amlogic: Fix out-of-range PLL frequency setting Jerome Brunet
2025-10-22 13:50     ` Chuan Liu
2025-10-22  6:58 ` [PATCH 2/3] clk: amlogic: Optimize PLL enable timing Chuan Liu via B4 Relay
2025-10-22 12:01   ` Jerome Brunet
2025-10-22 14:07     ` Chuan Liu
2025-10-30  8:45       ` Jerome Brunet
2025-10-22  6:58 ` [PATCH 3/3] clk: amlogic: Correct l_detect bit control Chuan Liu via B4 Relay

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