linux-kernel - [PATCH 4.18 065/171] clk: sunxi-ng: h6: fix bus clocks divider position

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Message-Id: <20181119162630.407619408@linuxfoundation.org>
Date:   Mon, 19 Nov 2018 17:27:41 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Icenowy Zheng <icenowy@...c.io>,
        Chen-Yu Tsai <wens@...e.org>
Subject: [PATCH 4.18 065/171] clk: sunxi-ng: h6: fix bus clocks divider position

4.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Icenowy Zheng <icenowy@...c.io>

commit 2852bfbf4f168fec27049ad9ed20941fc9e84b95 upstream.

The bus clocks (AHB/APB) on Allwinner H6 have their second divider start
at bit 8, according to the user manual and the BSP code. However,
currently the divider offset is incorrectly set to 16, thus the divider
is not correctly read and the clock frequency is not correctly calculated.

Fix this bit offset on all affected bus clocks in ccu-sun50i-h6.

Cc: stable@...r.kernel.org # v4.17.y
Signed-off-by: Icenowy Zheng <icenowy@...c.io>
Signed-off-by: Chen-Yu Tsai <wens@...e.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/clk/sunxi-ng/ccu-sun50i-h6.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/drivers/clk/sunxi-ng/ccu-sun50i-h6.c
+++ b/drivers/clk/sunxi-ng/ccu-sun50i-h6.c
@@ -224,7 +224,7 @@ static SUNXI_CCU_MP_WITH_MUX(psi_ahb1_ah
 			     psi_ahb1_ahb2_parents,
 			     0x510,
 			     0, 5,	/* M */
-			     16, 2,	/* P */
+			     8, 2,	/* P */
 			     24, 2,	/* mux */
 			     0);
 
@@ -233,19 +233,19 @@ static const char * const ahb3_apb1_apb2
 						       "pll-periph0" };
 static SUNXI_CCU_MP_WITH_MUX(ahb3_clk, "ahb3", ahb3_apb1_apb2_parents, 0x51c,
 			     0, 5,	/* M */
-			     16, 2,	/* P */
+			     8, 2,	/* P */
 			     24, 2,	/* mux */
 			     0);
 
 static SUNXI_CCU_MP_WITH_MUX(apb1_clk, "apb1", ahb3_apb1_apb2_parents, 0x520,
 			     0, 5,	/* M */
-			     16, 2,	/* P */
+			     8, 2,	/* P */
 			     24, 2,	/* mux */
 			     0);
 
 static SUNXI_CCU_MP_WITH_MUX(apb2_clk, "apb2", ahb3_apb1_apb2_parents, 0x524,
 			     0, 5,	/* M */
-			     16, 2,	/* P */
+			     8, 2,	/* P */
 			     24, 2,	/* mux */
 			     0);