初版

2025-12-03 11:12:34 +08:00
parent c23ae4f24c
commit bc195654bf
8163 changed files with 3799544 additions and 92 deletions
@@ -0,0 +1,50 @@
+#include "includes.h"
+#include "timer.h"
+
+void clock_early_init()
+{
+    if (M2P_LRC24M_MODE) {
+        //P11_SYS_CLK_SEL(P11_SYS_CLK_BTOSC_24M);
+        //P11_SYS_CLK_SEL(P11_SYS_CLK_LRC24M);
+        P11_SYS_CLK_SEL(P11_SYS_CLK_RC16M);
+
+#if 0
+        //PB0 OUT
+        P11_PORT->PB_DIR &= ~BIT(0);
+        P11_PORT->PB_SEL |=  BIT(0);
+        //och0 sysclk
+        SFR(P11_PORT->OCH_CON0, 0, 4, 7);
+        //crossbar och0
+        P11_OMAP->P11_PB0_OUT = P11_FO_GP_OCH0;
+
+        while (1);
+#endif
+    }
+
+    //std12M 输出
+    SFR(P11_CLOCK->CLK_CON1, 15, 2, 1); //MSYS_BT24M --> P11_BT24M
+    SFR(P11_CLOCK->CLK_CON1, 17, 3, 1); //STD12M sel P11_BT24M input
+    SFR(P11_CLOCK->CLK_CON1, 20, 2, 0); // div0
+    SFR(P11_CLOCK->CLK_CON1, 22, 2, 1); // div1
+}
+
+static void clock_switch_lrc24m()
+{
+    printf("fun: %s\n", __FUNCTION__);
+
+    P11_SYS_CLK_SEL(P11_SYS_CLK_LRC24M);
+
+    uart_clk_sel(UART_CLK_SYS_CLK);
+}
+
+static void clock_msg_handler(void *priv, u8 *msg, u32 len)
+{
+    switch (msg[0]) {
+    case MSG_CLOCK_LRC24M_OK:
+        clock_switch_lrc24m();
+        timer_set_clock_source(GPTIMER_CLK_SRC_LRC_24M);
+        break;
+    }
+}
+
+REGISTER_M2P_MSG_HANDLER(0, MSG_CLOCK, clock_msg_handler);