clk: imx6sl: ensure MMDC CH0 handshake is bypassed (0efcc2c0) · Commits · 戴 / test

Same as other i.MX6 SoCs, ensure unused MMDC channel's handshake is bypassed, this is to make sure no request signal will be generated when periphe_clk_sel is changed or SRC warm reset is triggered. Signed-off-by:

Anson Huang <Anson.Huang@nxp.com> Signed-off-by:

Stephen Boyd <sboyd@kernel.org>

drivers/clk/imx/clk-imx6sl.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -17,6 +17,8 @@

		#include "clk.h"

		#define CCDR 0x4
		#define BM_CCM_CCDR_MMDC_CH0_MASK (1 << 17)
		#define CCSR 0xc
		#define BM_CCSR_PLL1_SW_CLK_SEL (1 << 2)
		#define CACRR 0x10
		@@ -411,6 +413,10 @@ static void __init imx6sl_clocks_init(struct device_node *ccm_node)
		clks[IMX6SL_CLK_USDHC3] = imx_clk_gate2("usdhc3", "usdhc3_podf", base + 0x80, 6);
		clks[IMX6SL_CLK_USDHC4] = imx_clk_gate2("usdhc4", "usdhc4_podf", base + 0x80, 8);

		/* Ensure the MMDC CH0 handshake is bypassed */
		writel_relaxed(readl_relaxed(base + CCDR) \|
		BM_CCM_CCDR_MMDC_CH0_MASK, base + CCDR);

		imx_check_clocks(clks, ARRAY_SIZE(clks));

		clk_data.clks = clks;

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