imx8m: add sdhc/nand/ecspi clk api

Current DM CLK is a bit complicated, for simplity, let DM clk only
support enable/disable/get_rate. For the expected rate settings,
we use non-DM clk to do that. Then we could have simple DM clk for
i.MX and could also share between SPL/U-Boot proper.

Signed-off-by: Peng Fan <peng.fan@nxp.com>

diff --git a/arch/arm/mach-imx/imx8m/clock_imx8mm.c b/arch/arm/mach-imx/imx8m/clock_imx8mm.c
index 0a82086..68effbd 100644 (file)
--- a/arch/arm/mach-imx/imx8m/clock_imx8mm.c
+++ b/arch/arm/mach-imx/imx8m/clock_imx8mm.c
@@ -317,6 +317,72 @@ void init_wdog_clk(void)
        clock_enable(CCGR_WDOG3, 1);
 }
 
+void init_clk_usdhc(u32 index)
+{
+       /*
+        * set usdhc clock root
+        * sys pll1 400M
+        */
+       switch (index) {
+       case 0:
+               clock_enable(CCGR_USDHC1, 0);
+               clock_set_target_val(USDHC1_CLK_ROOT, CLK_ROOT_ON |
+                                    CLK_ROOT_SOURCE_SEL(1));
+               clock_enable(CCGR_USDHC1, 1);
+               return;
+       case 1:
+               clock_enable(CCGR_USDHC2, 0);
+               clock_set_target_val(USDHC2_CLK_ROOT, CLK_ROOT_ON |
+                                    CLK_ROOT_SOURCE_SEL(1));
+               clock_enable(CCGR_USDHC2, 1);
+               return;
+       case 2:
+               clock_enable(CCGR_USDHC3, 0);
+               clock_set_target_val(USDHC3_CLK_ROOT, CLK_ROOT_ON |
+                                    CLK_ROOT_SOURCE_SEL(1));
+               clock_enable(CCGR_USDHC3, 1);
+               return;
+       default:
+               printf("Invalid usdhc index\n");
+               return;
+       }
+}
+
+void init_clk_ecspi(u32 index)
+{
+       switch (index) {
+       case 0:
+               clock_enable(CCGR_ECSPI1, 0);
+               clock_set_target_val(ECSPI1_CLK_ROOT, CLK_ROOT_ON | CLK_ROOT_SOURCE_SEL(0));
+               clock_enable(CCGR_ECSPI1, 1);
+               return;
+       case 1:
+               clock_enable(CCGR_ECSPI2, 0);
+               clock_set_target_val(ECSPI2_CLK_ROOT, CLK_ROOT_ON | CLK_ROOT_SOURCE_SEL(0));
+               clock_enable(CCGR_ECSPI2, 1);
+       case 2:
+               clock_enable(CCGR_ECSPI3, 0);
+               clock_set_target_val(ECSPI3_CLK_ROOT, CLK_ROOT_ON | CLK_ROOT_SOURCE_SEL(0));
+               clock_enable(CCGR_ECSPI3, 1);
+               return;
+       default:
+               printf("Invalid ecspi index\n");
+               return;
+       }
+}
+
+void init_nand_clk(void)
+{
+       /*
+        * set rawnand root
+        * sys pll1 400M
+        */
+       clock_enable(CCGR_RAWNAND, 0);
+       clock_set_target_val(NAND_CLK_ROOT, CLK_ROOT_ON |
+               CLK_ROOT_SOURCE_SEL(3) | CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV4)); /* 100M */
+       clock_enable(CCGR_RAWNAND, 1);
+}
+
 int clock_init(void)
 {
        u32 val_cfg0;