Merge branch 'master' of git://git.denx.de/u-boot-samsung

[karo-tx-uboot.git] / board / davinci / da8xxevm / da850evm.c

diff --git a/board/davinci/da8xxevm/da850evm.c b/board/davinci/da8xxevm/da850evm.c
index c8c5e1b30edb5f08fdbb0b5f2c8b3b82ad1e6c04..c3267cbf51a6502e0665b2c930e1fb55f47c56e9 100644 (file)
--- a/board/davinci/da8xxevm/da850evm.c
+++ b/board/davinci/da8xxevm/da850evm.c
@@ -118,6 +118,39 @@ static const struct lpsc_resource lpsc[] = {
        { DAVINCI_LPSC_GPIO },
 };
 
+#ifndef CONFIG_DA850_EVM_MAX_CPU_CLK
+#define CONFIG_DA850_EVM_MAX_CPU_CLK   300000000
+#endif
+
+/*
+ * get_board_rev() - setup to pass kernel board revision information
+ * Returns:
+ * bit[0-3]    Maximum cpu clock rate supported by onboard SoC
+ *             0000b - 300 MHz
+ *             0001b - 372 MHz
+ *             0010b - 408 MHz
+ *             0011b - 456 MHz
+ */
+u32 get_board_rev(void)
+{
+       char *s;
+       u32 maxcpuclk = CONFIG_DA850_EVM_MAX_CPU_CLK;
+       u32 rev = 0;
+
+       s = getenv("maxcpuclk");
+       if (s)
+               maxcpuclk = simple_strtoul(s, NULL, 10);
+
+       if (maxcpuclk >= 456000000)
+               rev = 3;
+       else if (maxcpuclk >= 408000000)
+               rev = 2;
+       else if (maxcpuclk >= 372000000)
+               rev = 1;
+
+       return rev;
+}
+
 int board_init(void)
 {
 #ifndef CONFIG_USE_IRQ