[PATCH] clk: i.MX6qp: Fix location of the enfc_sel mux

[PATCH] clk: i.MX6qp: Fix location of the enfc_sel mux

[Sascha Hauer]

On the i.MX6qp the enfc_sel mux is at bits 15-17, not on 16-17. Fix
this. During clock tree initialization we reparented the enfc_sel to:

	clk_set_parent(clks[IMX6QDL_CLK_ENFC_SEL], clks[IMX6QDL_CLK_PLL2_PFD2_396M]);

This resulted in a register setting 0b110 for the enfc_sel mux which is
reserved. Apparently this reserved setting resulted in the enfc clock
being driven from pll3_pfd3_454m. This means our enfc clock was the
factor 454/396 too high.

With b534f79112f0 ("clk: imx6: Fix procedure to switch the parent of
LDB_DI_CLK") we happened to disable pll3_pfd3_454m during init, so with
this commit NAND stopped working entirely on i.MX6qp.

Both issues are fixed with this patch

Fixes: b534f79112f0 ("clk: imx6: Fix procedure to switch the parent of LDB_DI_CLK")
Fixes: 92fd61d12723 ("clk: i.MX6: Fix enfc_sel for i.MX6dqp")

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/clk/imx/clk-imx6.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/imx/clk-imx6.c b/drivers/clk/imx/clk-imx6.c
index c47281b16e..ed29e8c271 100644
--- a/drivers/clk/imx/clk-imx6.c
+++ b/drivers/clk/imx/clk-imx6.c
@@ -708,7 +708,7 @@ static int imx6_ccm_probe(struct device_d *dev)
 	clks[IMX6QDL_CLK_USDHC3_SEL]       = imx_clk_mux("usdhc3_sel",       base + 0x1c, 18, 1, usdhc_sels,        ARRAY_SIZE(usdhc_sels));
 	clks[IMX6QDL_CLK_USDHC4_SEL]       = imx_clk_mux("usdhc4_sel",       base + 0x1c, 19, 1, usdhc_sels,        ARRAY_SIZE(usdhc_sels));
 	if (cpu_mx6_is_plus())
-		clks[IMX6QDL_CLK_ENFC_SEL]         = imx_clk_mux("enfc_sel",         base + 0x2c, 16, 2, enfc_sels_plus,    ARRAY_SIZE(enfc_sels_plus));
+		clks[IMX6QDL_CLK_ENFC_SEL]         = imx_clk_mux("enfc_sel",         base + 0x2c, 15, 3, enfc_sels_plus,    ARRAY_SIZE(enfc_sels_plus));
 	else
 		clks[IMX6QDL_CLK_ENFC_SEL]         = imx_clk_mux("enfc_sel",         base + 0x2c, 16, 2, enfc_sels,         ARRAY_SIZE(enfc_sels));
 	clks[IMX6QDL_CLK_EIM_SEL]          = imx_clk_mux("eim_sel",          base + 0x1c, 27, 2, eim_sels,          ARRAY_SIZE(eim_sels));
-- 
2.23.0


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