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From: Andre Przywara <andre.przywara@arm.com>
To: Maxime Ripard <mripard@kernel.org>, Chen-Yu Tsai <wens@csie.org>,
	Jernej Skrabec <jernej.skrabec@siol.net>
Cc: Icenowy Zheng <icenowy@aosc.xyz>,
	linux-arm-kernel@lists.infradead.org,
	linux-sunxi@googlegroups.com,
	Linus Walleij <linus.walleij@linaro.org>,
	Rob Herring <robh+dt@kernel.org>,
	Yangtao Li <frank@allwinnertech.com>,
	linux-kernel@vger.kernel.org,
	Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@kernel.org>,
	linux-clk@vger.kernel.org,
	Andre Przywara <andre.przywara@arm.com>
Subject: [PATCH 1/8] clk: sunxi-ng: h6: Fix clock divider range on some clocks
Date: Wed,  2 Dec 2020 13:54:02 +0000	[thread overview]
Message-ID: <20201202135409.13683-2-andre.przywara@arm.com> (raw)
In-Reply-To: <20201202135409.13683-1-andre.przywara@arm.com>

While comparing clocks between the H6 and H616, some of the M factor
ranges were found to be wrong: the manual says they are only covering
two bits [1:0], but our code had "5" in the number-of-bits field.

By writing 0xff into that register in U-Boot and via FEL, it could be
confirmed that bits [4:2] are indeed masked off, so the manual is right.

Change to number of bits in the affected clock's description.

Fixes: 524353ea480b ("clk: sunxi-ng: add support for the Allwinner H6 CCU")
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
---
 drivers/clk/sunxi-ng/ccu-sun50i-h6.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/clk/sunxi-ng/ccu-sun50i-h6.c b/drivers/clk/sunxi-ng/ccu-sun50i-h6.c
index f2497d0a4683..d0565d378ea2 100644
--- a/drivers/clk/sunxi-ng/ccu-sun50i-h6.c
+++ b/drivers/clk/sunxi-ng/ccu-sun50i-h6.c
@@ -237,7 +237,7 @@ static const char * const psi_ahb1_ahb2_parents[] = { "osc24M", "osc32k",
 static SUNXI_CCU_MP_WITH_MUX(psi_ahb1_ahb2_clk, "psi-ahb1-ahb2",
 			     psi_ahb1_ahb2_parents,
 			     0x510,
-			     0, 5,	/* M */
+			     0, 2,	/* M */
 			     8, 2,	/* P */
 			     24, 2,	/* mux */
 			     0);
@@ -246,19 +246,19 @@ static const char * const ahb3_apb1_apb2_parents[] = { "osc24M", "osc32k",
 						       "psi-ahb1-ahb2",
 						       "pll-periph0" };
 static SUNXI_CCU_MP_WITH_MUX(ahb3_clk, "ahb3", ahb3_apb1_apb2_parents, 0x51c,
-			     0, 5,	/* M */
+			     0, 2,	/* M */
 			     8, 2,	/* P */
 			     24, 2,	/* mux */
 			     0);
 
 static SUNXI_CCU_MP_WITH_MUX(apb1_clk, "apb1", ahb3_apb1_apb2_parents, 0x520,
-			     0, 5,	/* M */
+			     0, 2,	/* M */
 			     8, 2,	/* P */
 			     24, 2,	/* mux */
 			     0);
 
 static SUNXI_CCU_MP_WITH_MUX(apb2_clk, "apb2", ahb3_apb1_apb2_parents, 0x524,
-			     0, 5,	/* M */
+			     0, 2,	/* M */
 			     8, 2,	/* P */
 			     24, 2,	/* mux */
 			     0);
-- 
2.17.5


  reply	other threads:[~2020-12-02 13:55 UTC|newest]

Thread overview: 57+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-02 13:54 [PATCH 0/8] arm64: sunxi: Initial Allwinner H616 SoC support Andre Przywara
2020-12-02 13:54 ` Andre Przywara [this message]
2020-12-02 16:17   ` [PATCH 1/8] clk: sunxi-ng: h6: Fix clock divider range on some clocks Jernej Škrabec
2020-12-02 13:54 ` [PATCH 2/8] pinctrl: sunxi: Add support for the Allwinner H616 pin controller Andre Przywara
2020-12-02 15:52   ` Maxime Ripard
2020-12-05 22:41     ` Linus Walleij
2020-12-02 18:15   ` Jernej Škrabec
2020-12-06 12:32   ` [linux-sunxi] " Clément Péron
2020-12-06 12:42     ` Jernej Škrabec
2020-12-06 14:52       ` André Przywara
2020-12-06 16:01         ` Icenowy Zheng
2020-12-07  1:07           ` André Przywara
2020-12-07  1:45             ` André Przywara
2020-12-13 16:27   ` Icenowy Zheng
2020-12-14  9:26     ` Chen-Yu Tsai
2020-12-02 13:54 ` [PATCH 3/8] pinctrl: sunxi: Add support for the Allwinner H616-R " Andre Przywara
2020-12-02 15:54   ` Maxime Ripard
2020-12-02 17:55   ` Jernej Škrabec
2020-12-02 13:54 ` [PATCH 4/8] clk: sunxi-ng: Add support for the Allwinner H616 R-CCU Andre Przywara
2020-12-02 14:31   ` Icenowy Zheng
2020-12-03 11:07     ` André Przywara
2020-12-03 14:02       ` [linux-sunxi] " Icenowy Zheng
2020-12-02 18:20   ` Jernej Škrabec
2020-12-03  2:44     ` Samuel Holland
2020-12-03 10:52     ` André Przywara
2020-12-02 13:54 ` [PATCH 5/8] clk: sunxi-ng: Add support for the Allwinner H616 CCU Andre Przywara
2020-12-02 15:56   ` Maxime Ripard
2020-12-02 21:03   ` Jernej Škrabec
2020-12-02 23:06     ` André Przywara
2020-12-05 16:36       ` [linux-sunxi] " Icenowy Zheng
2020-12-09 14:33   ` [linux-sunxi] " Clément Péron
2020-12-09 21:35     ` André Przywara
2020-12-09 22:20       ` Jernej Škrabec
2020-12-09 22:45         ` André Przywara
2020-12-10 13:31   ` Icenowy Zheng
2020-12-10 14:34     ` André Przywara
2020-12-02 13:54 ` [PATCH 6/8] mmc: sunxi: add support for A100 mmc controller Andre Przywara
2020-12-02 13:54 ` [PATCH 7/8] arm64: dts: allwinner: Add Allwinner H616 .dtsi file Andre Przywara
2020-12-02 16:03   ` Icenowy Zheng
2020-12-02 16:19     ` André Przywara
2020-12-02 16:05   ` Maxime Ripard
2020-12-02 16:13     ` Icenowy Zheng
2020-12-03  3:10     ` Samuel Holland
2020-12-02 16:33   ` Jernej Škrabec
2020-12-03  1:35     ` André Przywara
2020-12-03  3:16   ` Samuel Holland
2020-12-03 10:53     ` André Przywara
2020-12-03 15:02       ` [linux-sunxi] " Chen-Yu Tsai
2020-12-03 15:44         ` André Przywara
2020-12-03 16:20           ` Chen-Yu Tsai
2020-12-08  0:47             ` André Przywara
2020-12-02 13:54 ` [PATCH 8/8] arm64: dts: allwinner: Add OrangePi Zero 2 .dts Andre Przywara
2020-12-02 15:57   ` Icenowy Zheng
2020-12-02 16:43     ` André Przywara
2020-12-02 16:07   ` Maxime Ripard
2020-12-02 16:25     ` Jernej Škrabec
2020-12-06 12:51   ` [linux-sunxi] " Clément Péron

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