Commit b4f5e1ff authored May 22, 2018 by Rui Miguel Silva Committed by Stephen Boyd Jun 01, 2018

clk: imx7d: reset parent for mipi csi root



To guarantee that we do not get Overflow in image FIFO the outer bandwidth has
to be faster than inputer bandwidth. For that it must be possible to set a
faster frequency clock. So set new parent to sys_pfd3 clock for the mipi csi
block.

Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

parent 4dd5d5b5

drivers/clk/imx/clk-imx7d.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -891,6 +891,8 @@ static void __init imx7d_clocks_init(struct device_node *ccm_node)
		clk_set_parent(clks[IMX7D_PLL_AUDIO_MAIN_BYPASS], clks[IMX7D_PLL_AUDIO_MAIN]);
		clk_set_parent(clks[IMX7D_PLL_VIDEO_MAIN_BYPASS], clks[IMX7D_PLL_VIDEO_MAIN]);

		clk_set_parent(clks[IMX7D_MIPI_CSI_ROOT_SRC], clks[IMX7D_PLL_SYS_PFD3_CLK]);

		/* use old gpt clk setting, gpt1 root clk must be twice as gpt counter freq */
		clk_set_parent(clks[IMX7D_GPT1_ROOT_SRC], clks[IMX7D_OSC_24M_CLK]);

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