ls1021atwr: add hwconfig setting to do pin mux

Freescale LS1021ATWR share some pins. Hwconfig option is used to allows users to choose the pin functions. Signed-off-by: Yuan Yao <yao.yuan@freescale.com> [York Sun: revised commit message] Reviewed-by: York Sun <yorksun@freescale.com>

ls1021atwr: add hwconfig setting to do pin mux
Freescale LS1021ATWR share some pins. Hwconfig option is used to allows users to choose the pin functions. Signed-off-by: Yuan Yao <yao.yuan@freescale.com> [York Sun: revised commit message] Reviewed-by: York Sun <yorksun@freescale.com>
Yao Yuan · York Sun
1 parent 036f3f3379
Showing 1 changed file with 78 additions and 0 deletions Side-by-side Diff
board/freescale/ls1021atwr/ls1021atwr.c
@@ -13,6 +13,7 @@
 #include <asm/arch/fsl_serdes.h>
 #include <asm/arch/ls102xa_stream_id.h>
 #include <asm/pcie_layerscape.h>
+#include <hwconfig.h>
 #include <mmc.h>
 #include <fsl_esdhc.h>
 #include <fsl_ifc.h>
@@ -54,6 +55,17 @@
 #define KEEP_STATUS		0x0
 #define NEED_RESET		0x1
  
+#define SOFT_MUX_ON_I2C3_IFC	0x2
+#define SOFT_MUX_ON_CAN3_USB2	0x8
+#define SOFT_MUX_ON_QE_LCD	0x10
+
+#define PIN_I2C3_IFC_MUX_I2C3	0x0
+#define PIN_I2C3_IFC_MUX_IFC	0x1
+#define PIN_CAN3_USB2_MUX_USB2	0x0
+#define PIN_CAN3_USB2_MUX_CAN3	0x1
+#define PIN_QE_LCD_MUX_LCD	0x0
+#define PIN_QE_LCD_MUX_QE	0x1
+
 struct cpld_data {
 	u8 cpld_ver;		/* cpld revision */
 	u8 cpld_ver_sub;	/* cpld sub revision */
@@ -271,6 +283,68 @@
 }
 #endif
  
+#ifndef CONFIG_QSPI_BOOT
+int config_board_mux(void)
+{
+	struct cpld_data *cpld_data = (void *)(CONFIG_SYS_CPLD_BASE);
+	int conflict_flag;
+
+	conflict_flag = 0;
+	if (hwconfig("i2c3")) {
+		conflict_flag++;
+		cpld_data->soft_mux_on |= SOFT_MUX_ON_I2C3_IFC;
+		cpld_data->i2c3_ifc_mux = PIN_I2C3_IFC_MUX_I2C3;
+	}
+
+	if (hwconfig("ifc")) {
+		conflict_flag++;
+		/* some signals can not enable simultaneous*/
+		if (conflict_flag > 1)
+			goto conflict;
+		cpld_data->soft_mux_on |= SOFT_MUX_ON_I2C3_IFC;
+		cpld_data->i2c3_ifc_mux = PIN_I2C3_IFC_MUX_IFC;
+	}
+
+	conflict_flag = 0;
+	if (hwconfig("usb2")) {
+		conflict_flag++;
+		cpld_data->soft_mux_on |= SOFT_MUX_ON_CAN3_USB2;
+		cpld_data->can3_usb2_mux = PIN_CAN3_USB2_MUX_USB2;
+	}
+
+	if (hwconfig("can3")) {
+		conflict_flag++;
+		/* some signals can not enable simultaneous*/
+		if (conflict_flag > 1)
+			goto conflict;
+		cpld_data->soft_mux_on |= SOFT_MUX_ON_CAN3_USB2;
+		cpld_data->can3_usb2_mux = PIN_CAN3_USB2_MUX_CAN3;
+	}
+
+	conflict_flag = 0;
+	if (hwconfig("lcd")) {
+		conflict_flag++;
+		cpld_data->soft_mux_on |= SOFT_MUX_ON_QE_LCD;
+		cpld_data->qe_lcd_mux = PIN_QE_LCD_MUX_LCD;
+	}
+
+	if (hwconfig("qe")) {
+		conflict_flag++;
+		/* some signals can not enable simultaneous*/
+		if (conflict_flag > 1)
+			goto conflict;
+		cpld_data->soft_mux_on |= SOFT_MUX_ON_QE_LCD;
+		cpld_data->qe_lcd_mux = PIN_QE_LCD_MUX_QE;
+	}
+
+	return 0;
+
+conflict:
+	printf("WARNING: pin conflict! MUX setting may failed!\n");
+	return 0;
+}
+#endif
+
 int board_early_init_f(void)
 {
 	struct ccsr_scfg *scfg = (struct ccsr_scfg *)CONFIG_SYS_FSL_SCFG_ADDR;
@@ -480,6 +554,10 @@
 #if defined(CONFIG_MISC_INIT_R)
 int misc_init_r(void)
 {
+#ifndef CONFIG_QSPI_BOOT
+	config_board_mux();
+#endif
+
 #ifdef CONFIG_FSL_CAAM
 	return sec_init();
 #endif
...	...	@@ -13,6 +13,7 @@
13	13	#include <asm/arch/fsl_serdes.h>
14	14	#include <asm/arch/ls102xa_stream_id.h>
15	15	#include <asm/pcie_layerscape.h>
	16	+#include <hwconfig.h>
16	17	#include <mmc.h>
17	18	#include <fsl_esdhc.h>
18	19	#include <fsl_ifc.h>
...	...	@@ -54,6 +55,17 @@
54	55	#define KEEP_STATUS 0x0
55	56	#define NEED_RESET 0x1
56	57
	58	+#define SOFT_MUX_ON_I2C3_IFC 0x2
	59	+#define SOFT_MUX_ON_CAN3_USB2 0x8
	60	+#define SOFT_MUX_ON_QE_LCD 0x10
	61	+
	62	+#define PIN_I2C3_IFC_MUX_I2C3 0x0
	63	+#define PIN_I2C3_IFC_MUX_IFC 0x1
	64	+#define PIN_CAN3_USB2_MUX_USB2 0x0
	65	+#define PIN_CAN3_USB2_MUX_CAN3 0x1
	66	+#define PIN_QE_LCD_MUX_LCD 0x0
	67	+#define PIN_QE_LCD_MUX_QE 0x1
	68	+
57	69	struct cpld_data {
58	70	u8 cpld_ver; /* cpld revision */
59	71	u8 cpld_ver_sub; /* cpld sub revision */
...	...	@@ -271,6 +283,68 @@
271	283	}
272	284	#endif
273	285
	286	+#ifndef CONFIG_QSPI_BOOT
	287	+int config_board_mux(void)
	288	+{
	289	+ struct cpld_data cpld_data = (void )(CONFIG_SYS_CPLD_BASE);
	290	+ int conflict_flag;
	291	+
	292	+ conflict_flag = 0;
	293	+ if (hwconfig("i2c3")) {
	294	+ conflict_flag++;
	295	+ cpld_data->soft_mux_on \|= SOFT_MUX_ON_I2C3_IFC;
	296	+ cpld_data->i2c3_ifc_mux = PIN_I2C3_IFC_MUX_I2C3;
	297	+ }
	298	+
	299	+ if (hwconfig("ifc")) {
	300	+ conflict_flag++;
	301	+ /* some signals can not enable simultaneous*/
	302	+ if (conflict_flag > 1)
	303	+ goto conflict;
	304	+ cpld_data->soft_mux_on \|= SOFT_MUX_ON_I2C3_IFC;
	305	+ cpld_data->i2c3_ifc_mux = PIN_I2C3_IFC_MUX_IFC;
	306	+ }
	307	+
	308	+ conflict_flag = 0;
	309	+ if (hwconfig("usb2")) {
	310	+ conflict_flag++;
	311	+ cpld_data->soft_mux_on \|= SOFT_MUX_ON_CAN3_USB2;
	312	+ cpld_data->can3_usb2_mux = PIN_CAN3_USB2_MUX_USB2;
	313	+ }
	314	+
	315	+ if (hwconfig("can3")) {
	316	+ conflict_flag++;
	317	+ /* some signals can not enable simultaneous*/
	318	+ if (conflict_flag > 1)
	319	+ goto conflict;
	320	+ cpld_data->soft_mux_on \|= SOFT_MUX_ON_CAN3_USB2;
	321	+ cpld_data->can3_usb2_mux = PIN_CAN3_USB2_MUX_CAN3;
	322	+ }
	323	+
	324	+ conflict_flag = 0;
	325	+ if (hwconfig("lcd")) {
	326	+ conflict_flag++;
	327	+ cpld_data->soft_mux_on \|= SOFT_MUX_ON_QE_LCD;
	328	+ cpld_data->qe_lcd_mux = PIN_QE_LCD_MUX_LCD;
	329	+ }
	330	+
	331	+ if (hwconfig("qe")) {
	332	+ conflict_flag++;
	333	+ /* some signals can not enable simultaneous*/
	334	+ if (conflict_flag > 1)
	335	+ goto conflict;
	336	+ cpld_data->soft_mux_on \|= SOFT_MUX_ON_QE_LCD;
	337	+ cpld_data->qe_lcd_mux = PIN_QE_LCD_MUX_QE;
	338	+ }
	339	+
	340	+ return 0;
	341	+
	342	+conflict:
	343	+ printf("WARNING: pin conflict! MUX setting may failed!\n");
	344	+ return 0;
	345	+}
	346	+#endif
	347	+
274	348	int board_early_init_f(void)
275	349	{
276	350	struct ccsr_scfg scfg = (struct ccsr_scfg )CONFIG_SYS_FSL_SCFG_ADDR;
...	...	@@ -480,6 +554,10 @@
480	554	#if defined(CONFIG_MISC_INIT_R)
481	555	int misc_init_r(void)
482	556	{
	557	+#ifndef CONFIG_QSPI_BOOT
	558	+ config_board_mux();
	559	+#endif
	560	+
483	561	#ifdef CONFIG_FSL_CAAM
484	562	return sec_init();
485	563	#endif