Messages in this thread Patch in this message | | | From | Jagan Teki <> | Subject | [PATCH v4 3/6] media: sun6i: Update default CSI_SCLK for A64 | Date | Tue, 18 Dec 2018 17:03:17 +0530 |
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Unfortunately A64 CSI cannot work with default CSI_SCLK rate.
A64 BSP is using 300MHz clock rate as default csi clock, so sun6i_csi require explicit change to update CSI_SCLK rate to 300MHZ for A64 SoC's.
So, set the clk_mod to 300MHz only for A64.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> --- drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c index 9ff61896e4bb..91470edf7581 100644 --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c @@ -822,6 +822,11 @@ static int sun6i_csi_resource_request(struct sun6i_csi_dev *sdev, return PTR_ERR(sdev->clk_mod); } + /* A64 require 300MHz mod clock to operate properly */ + if (of_device_is_compatible(pdev->dev.of_node, + "allwinner,sun50i-a64-csi")) + clk_set_rate_exclusive(sdev->clk_mod, 300000000); + sdev->clk_ram = devm_clk_get(&pdev->dev, "ram"); if (IS_ERR(sdev->clk_ram)) { dev_err(&pdev->dev, "Unable to acquire dram-csi clock\n"); -- 2.18.0.321.gffc6fa0e3
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