da850: provide davinci_enable_uart0

this is needed to bring UART0 out of reset but this function currently only exists for dm644x/355/365/646x when da850 (at least am1808 also need it). Signed-off-by: Eric Bénard <eric@eukrea.com>

da850: provide davinci_enable_uart0
this is needed to bring UART0 out of reset but this function currently only exists for dm644x/355/365/646x when da850 (at least am1808 also need it). Signed-off-by: Eric Bénard <eric@eukrea.com>
Eric Benard · Tom Rini
1 parent 0b800a6b26
Showing 2 changed files with 10 additions and 0 deletions Side-by-side Diff
arch/arm/cpu/arm926ejs/davinci/da850_lowlevel.c
arch/arm/include/asm/arch-davinci/hardware.h
@@ -32,6 +32,14 @@
 #include <asm/arch/emif_defs.h>
 #include <asm/arch/pll_defs.h>
  
+void davinci_enable_uart0(void)
+{
+	lpsc_on(DAVINCI_LPSC_UART0);
+
+	/* Bringup UART0 out of reset */
+	REG(UART0_PWREMU_MGMT) = 0x00006001;
+}
+
 #if defined(CONFIG_SYS_DA850_PLL_INIT)
 void da850_waitloop(unsigned long loopcnt)
 {
@@ -346,6 +346,8 @@
 #define PSC_PSC0_MODULE_ID_CNT		16
 #define PSC_PSC1_MODULE_ID_CNT		32
  
+#define UART0_PWREMU_MGMT		(0x01c42030)
+
 struct davinci_psc_regs {
 	dv_reg	revid;
 	dv_reg	rsvd0[71];
...	...	@@ -32,6 +32,14 @@
32	32	#include <asm/arch/emif_defs.h>
33	33	#include <asm/arch/pll_defs.h>
34	34
	35	+void davinci_enable_uart0(void)
	36	+{
	37	+ lpsc_on(DAVINCI_LPSC_UART0);
	38	+
	39	+ /* Bringup UART0 out of reset */
	40	+ REG(UART0_PWREMU_MGMT) = 0x00006001;
	41	+}
	42	+
35	43	#if defined(CONFIG_SYS_DA850_PLL_INIT)
36	44	void da850_waitloop(unsigned long loopcnt)
37	45	{
...	...	@@ -346,6 +346,8 @@
346	346	#define PSC_PSC0_MODULE_ID_CNT 16
347	347	#define PSC_PSC1_MODULE_ID_CNT 32
348	348
	349	+#define UART0_PWREMU_MGMT (0x01c42030)
	350	+
349	351	struct davinci_psc_regs {
350	352	dv_reg revid;
351	353	dv_reg rsvd0[71];