clk: socfpga: Read the clock parent's register base in probe function

This commit (82de42fa14682d408da935adfb0f935354c5008f) calls child's
ofdata_to_platdata() method before the parent is probed in dm core.
This has caused the driver no longer able to get the correct parent
clock's register base in the ofdata_to_platdata() method because the
parent clocks will only be probed after the child's ofdata_to_platdata().
To resolve this, the clock parent's register base will only be retrieved
by the child in probe() method instead of ofdata_to_platdata().

Signed-off-by: Chee Hong Ang <chee.hong.ang@intel.com>
Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>

diff --git a/drivers/clk/altera/clk-arria10.c b/drivers/clk/altera/clk-arria10.c
index affeb31..b7eed94 100644 (file)
--- a/drivers/clk/altera/clk-arria10.c
+++ b/drivers/clk/altera/clk-arria10.c
@@ -274,6 +274,8 @@ static int socfpga_a10_clk_bind(struct udevice *dev)
 static int socfpga_a10_clk_probe(struct udevice *dev)
 {
        struct socfpga_a10_clk_platdata *plat = dev_get_platdata(dev);
+       struct socfpga_a10_clk_platdata *pplat;
+       struct udevice *pdev;
        const void *fdt = gd->fdt_blob;
        int offset = dev_of_offset(dev);
 
@@ -281,6 +283,21 @@ static int socfpga_a10_clk_probe(struct udevice *dev)
 
        socfpga_a10_handoff_workaround(dev);
 
+       if (!fdt_node_check_compatible(fdt, offset, "altr,clk-mgr")) {
+               plat->regs = devfdt_get_addr(dev);
+       } else {
+               pdev = dev_get_parent(dev);
+               if (!pdev)
+                       return -ENODEV;
+
+               pplat = dev_get_platdata(pdev);
+               if (!pplat)
+                       return -EINVAL;
+
+               plat->ctl_reg = dev_read_u32_default(dev, "reg", 0x0);
+               plat->regs = pplat->regs;
+       }
+
        if (!fdt_node_check_compatible(fdt, offset,
                                       "altr,socfpga-a10-pll-clock")) {
                /* Main PLL has 3 upstream clock */
@@ -304,29 +321,8 @@ static int socfpga_a10_clk_probe(struct udevice *dev)
 static int socfpga_a10_ofdata_to_platdata(struct udevice *dev)
 {
        struct socfpga_a10_clk_platdata *plat = dev_get_platdata(dev);
-       struct socfpga_a10_clk_platdata *pplat;
-       struct udevice *pdev;
-       const void *fdt = gd->fdt_blob;
        unsigned int divreg[3], gatereg[2];
-       int ret, offset = dev_of_offset(dev);
-       u32 regs;
-
-       regs = dev_read_u32_default(dev, "reg", 0x0);
-
-       if (!fdt_node_check_compatible(fdt, offset, "altr,clk-mgr")) {
-               plat->regs = devfdt_get_addr(dev);
-       } else {
-               pdev = dev_get_parent(dev);
-               if (!pdev)
-                       return -ENODEV;
-
-               pplat = dev_get_platdata(pdev);
-               if (!pplat)
-                       return -EINVAL;
-
-               plat->ctl_reg = regs;
-               plat->regs = pplat->regs;
-       }
+       int ret;
 
        plat->type = SOCFPGA_A10_CLK_UNKNOWN_CLK;