clk: samsung: exynos7885: Correct "div4" clock parents

"div4" DIVs which divide PLLs by 4 are actually dividing "div2" DIVs by
2 to achieve a by 4 division, thus their parents are the respective
"div2" DIVs. These DIVs were mistakenly set to have the PLLs as parents.
This leads to the kernel thinking "div4"s and everything under them run
at 2x the clock speed. Fix this.

Fixes: 45bd816 ("clk: samsung: Add initial Exynos7885 clock driver")
Signed-off-by: David Virag <[email protected]>
Acked-by: Chanwoo Choi <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Krzysztof Kozlowski <[email protected]>

Author: VDavid003

drivers/clk/samsung/clk-exynos7885.c

@@ -231,15 +231,15 @@ static const struct samsung_div_clock top_div_clks[] __initconst = {
 	    CLK_CON_DIV_PLL_SHARED0_DIV2, 0, 1),
 	DIV(CLK_DOUT_SHARED0_DIV3, "dout_shared0_div3", "fout_shared0_pll",
 	    CLK_CON_DIV_PLL_SHARED0_DIV3, 0, 2),
-	DIV(CLK_DOUT_SHARED0_DIV4, "dout_shared0_div4", "fout_shared0_pll",
+	DIV(CLK_DOUT_SHARED0_DIV4, "dout_shared0_div4", "dout_shared0_div2",
 	    CLK_CON_DIV_PLL_SHARED0_DIV4, 0, 1),
 	DIV(CLK_DOUT_SHARED0_DIV5, "dout_shared0_div5", "fout_shared0_pll",
 	    CLK_CON_DIV_PLL_SHARED0_DIV5, 0, 3),
 	DIV(CLK_DOUT_SHARED1_DIV2, "dout_shared1_div2", "fout_shared1_pll",
 	    CLK_CON_DIV_PLL_SHARED1_DIV2, 0, 1),
 	DIV(CLK_DOUT_SHARED1_DIV3, "dout_shared1_div3", "fout_shared1_pll",
 	    CLK_CON_DIV_PLL_SHARED1_DIV3, 0, 2),
-	DIV(CLK_DOUT_SHARED1_DIV4, "dout_shared1_div4", "fout_shared1_pll",
+	DIV(CLK_DOUT_SHARED1_DIV4, "dout_shared1_div4", "dout_shared1_div2",
 	    CLK_CON_DIV_PLL_SHARED1_DIV4, 0, 1),
 
 	/* CORE */