ramips: rt305x: fix CPU clock detection on RT3352

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31401 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/ramips/files/arch/mips/include/asm/mach-ralink/rt305x_regs.h b/target/linux/ramips/files/arch/mips/include/asm/mach-ralink/rt305x_regs.h
index 9e1aa66..e121582 100644 (file)
--- a/target/linux/ramips/files/arch/mips/include/asm/mach-ralink/rt305x_regs.h
+++ b/target/linux/ramips/files/arch/mips/include/asm/mach-ralink/rt305x_regs.h
@@ -80,6 +80,11 @@
 #define RT305X_SYSCFG_SRAM_CS0_MODE_WDT                1
 #define RT305X_SYSCFG_SRAM_CS0_MODE_BTCOEX     2
 
+#define RT3352_SYSCFG0_CPUCLK_SHIFT    8
+#define RT3352_SYSCFG0_CPUCLK_MASK     0x1
+#define RT3352_SYSCFG0_CPUCLK_LOW      0x0
+#define RT3352_SYSCFG0_CPUCLK_HIGH     0x1
+
 #define RT305X_GPIO_MODE_I2C           BIT(0)
 #define RT305X_GPIO_MODE_SPI           BIT(1)
 #define RT305X_GPIO_MODE_UART0_SHIFT   2

diff --git a/target/linux/ramips/files/arch/mips/ralink/rt305x/clock.c b/target/linux/ramips/files/arch/mips/ralink/rt305x/clock.c
index 522bb44..4a99cf3 100644 (file)
--- a/target/linux/ramips/files/arch/mips/ralink/rt305x/clock.c
+++ b/target/linux/ramips/files/arch/mips/ralink/rt305x/clock.c
@@ -33,20 +33,39 @@ void __init rt305x_clocks_init(void)
        u32     t;
 
        t = rt305x_sysc_rr(SYSC_REG_SYSTEM_CONFIG);
-       t = ((t >> RT305X_SYSCFG_CPUCLK_SHIFT) & RT305X_SYSCFG_CPUCLK_MASK);
-
-       switch (t) {
-       case RT305X_SYSCFG_CPUCLK_LOW:
-               rt305x_cpu_clk.rate = 320000000;
-               break;
-       case RT305X_SYSCFG_CPUCLK_HIGH:
-               rt305x_cpu_clk.rate = 384000000;
-               break;
+
+       if (soc_is_rt305x() || soc_is_rt3350()) {
+               t = (t >> RT305X_SYSCFG_CPUCLK_SHIFT) &
+                    RT305X_SYSCFG_CPUCLK_MASK;
+               switch (t) {
+               case RT305X_SYSCFG_CPUCLK_LOW:
+                       rt305x_cpu_clk.rate = 320000000;
+                       break;
+               case RT305X_SYSCFG_CPUCLK_HIGH:
+                       rt305x_cpu_clk.rate = 384000000;
+                       break;
+               }
+               rt305x_sys_clk.rate = rt305x_cpu_clk.rate / 3;
+               rt305x_uart_clk.rate = rt305x_sys_clk.rate;
+               rt305x_wdt_clk.rate = rt305x_sys_clk.rate;
+       } else if (soc_is_rt3352()) {
+               t = (t >> RT3352_SYSCFG0_CPUCLK_SHIFT) &
+                    RT3352_SYSCFG0_CPUCLK_MASK;
+               switch (t) {
+               case RT3352_SYSCFG0_CPUCLK_LOW:
+                       rt305x_cpu_clk.rate = 384000000;
+                       break;
+               case RT3352_SYSCFG0_CPUCLK_HIGH:
+                       rt305x_cpu_clk.rate = 400000000;
+                       break;
+               }
+               rt305x_sys_clk.rate = rt305x_cpu_clk.rate / 3;
+               rt305x_uart_clk.rate = rt305x_sys_clk.rate / 10;
+               rt305x_wdt_clk.rate = rt305x_sys_clk.rate;
+       } else {
+               BUG();
        }
 
-       rt305x_sys_clk.rate = rt305x_cpu_clk.rate / 3;
-       rt305x_uart_clk.rate = rt305x_sys_clk.rate;
-       rt305x_wdt_clk.rate = rt305x_sys_clk.rate;
 }
 
 /*