38 lines
1.2 KiB
Diff
38 lines
1.2 KiB
Diff
From 1a3e5173f5e72cbf7f0c8927b33082e361c16d72 Mon Sep 17 00:00:00 2001
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From: Marc Kleine-Budde <mkl@pengutronix.de>
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Date: Mon, 25 Nov 2013 22:15:20 +0100
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Subject: [PATCH] can: flexcan: use correct clock as base for bit rate
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calculation
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The flexcan IP core uses the peripheral clock ("per") as basic clock for the
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bit timing calculation. However the driver uses the the wrong clock ("ipg").
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This leads to wrong bit rates if the rates on both clock are different.
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This patch fixes the problem by using the correct clock for the bit rate
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calculation.
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Cc: linux-stable <stable@vger.kernel.org>
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Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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---
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drivers/net/can/flexcan.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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--- a/drivers/net/can/flexcan.c
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+++ b/drivers/net/can/flexcan.c
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@@ -1019,7 +1019,6 @@ static int flexcan_probe(struct platform
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err = PTR_ERR(clk_ipg);
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goto failed_clock;
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}
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- clock_freq = clk_get_rate(clk_ipg);
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clk_per = devm_clk_get(&pdev->dev, "per");
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if (IS_ERR(clk_per)) {
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@@ -1027,6 +1026,7 @@ static int flexcan_probe(struct platform
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err = PTR_ERR(clk_per);
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goto failed_clock;
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}
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+ clock_freq = clk_get_rate(clk_per);
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}
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mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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