ls1021aqds: add hwconfig setting to do pin mux
The Freescale LS1021AQDS share some pins, so Add the hwconfig option
that allows the user to choose which the function he wants.
The main pin mux IP is:
eSDHC, SAI, IIC2, RGMII, CAN, SAI.
Signed-off-by: Yuan Yao <yao.yuan@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
diff --git a/board/freescale/ls1021aqds/ls1021aqds.c b/board/freescale/ls1021aqds/ls1021aqds.c
index 691e828..6c66bd4 100644
--- a/board/freescale/ls1021aqds/ls1021aqds.c
+++ b/board/freescale/ls1021aqds/ls1021aqds.c
@@ -11,6 +11,7 @@
#include <asm/arch/clock.h>
#include <asm/arch/fsl_serdes.h>
#include <asm/pcie_layerscape.h>
+#include <hwconfig.h>
#include <mmc.h>
#include <fsl_esdhc.h>
#include <fsl_ifc.h>
@@ -23,9 +24,22 @@
#include "../../../drivers/qe/qe.h"
#endif
+#define PIN_MUX_SEL_CAN 0x03
+#define PIN_MUX_SEL_IIC2 0xa0
+#define PIN_MUX_SEL_RGMII 0x00
+#define PIN_MUX_SEL_SAI 0x0c
+#define PIN_MUX_SEL_SDHC 0x00
+
+#define SET_SDHC_MUX_SEL(reg, value) ((reg & 0x0f) | value)
+#define SET_EC_MUX_SEL(reg, value) ((reg & 0xf0) | value)
DECLARE_GLOBAL_DATA_PTR;
enum {
+ MUX_TYPE_CAN,
+ MUX_TYPE_IIC2,
+ MUX_TYPE_RGMII,
+ MUX_TYPE_SAI,
+ MUX_TYPE_SDHC,
MUX_TYPE_SD_PCI4,
MUX_TYPE_SD_PC_SA_SG_SG,
MUX_TYPE_SD_PC_SA_PC_SG,
@@ -230,11 +244,27 @@
int config_board_mux(int ctrl_type)
{
- u8 reg12;
+ u8 reg12, reg14;
reg12 = QIXIS_READ(brdcfg[12]);
+ reg14 = QIXIS_READ(brdcfg[14]);
switch (ctrl_type) {
+ case MUX_TYPE_CAN:
+ reg14 = SET_EC_MUX_SEL(reg14, PIN_MUX_SEL_CAN);
+ break;
+ case MUX_TYPE_IIC2:
+ reg14 = SET_SDHC_MUX_SEL(reg14, PIN_MUX_SEL_IIC2);
+ break;
+ case MUX_TYPE_RGMII:
+ reg14 = SET_EC_MUX_SEL(reg14, PIN_MUX_SEL_RGMII);
+ break;
+ case MUX_TYPE_SAI:
+ reg14 = SET_EC_MUX_SEL(reg14, PIN_MUX_SEL_SAI);
+ break;
+ case MUX_TYPE_SDHC:
+ reg14 = SET_SDHC_MUX_SEL(reg14, PIN_MUX_SEL_SDHC);
+ break;
case MUX_TYPE_SD_PCI4:
reg12 = 0x38;
break;
@@ -253,6 +283,7 @@
}
QIXIS_WRITE(brdcfg[12], reg12);
+ QIXIS_WRITE(brdcfg[14], reg14);
return 0;
}
@@ -286,14 +317,50 @@
return 0;
}
-#if defined(CONFIG_MISC_INIT_R)
int misc_init_r(void)
{
+ int conflict_flag;
+
+ /* some signals can not enable simultaneous*/
+ conflict_flag = 0;
+ if (hwconfig("sdhc"))
+ conflict_flag++;
+ if (hwconfig("iic2"))
+ conflict_flag++;
+ if (conflict_flag > 1) {
+ printf("WARNING: pin conflict !\n");
+ return 0;
+ }
+
+ conflict_flag = 0;
+ if (hwconfig("rgmii"))
+ conflict_flag++;
+ if (hwconfig("can"))
+ conflict_flag++;
+ if (hwconfig("sai"))
+ conflict_flag++;
+ if (conflict_flag > 1) {
+ printf("WARNING: pin conflict !\n");
+ return 0;
+ }
+
+ if (hwconfig("can"))
+ config_board_mux(MUX_TYPE_CAN);
+ else if (hwconfig("rgmii"))
+ config_board_mux(MUX_TYPE_RGMII);
+ else if (hwconfig("sai"))
+ config_board_mux(MUX_TYPE_SAI);
+
+ if (hwconfig("iic2"))
+ config_board_mux(MUX_TYPE_IIC2);
+ else if (hwconfig("sdhc"))
+ config_board_mux(MUX_TYPE_SDHC);
+
#ifdef CONFIG_FSL_CAAM
return sec_init();
#endif
+ return 0;
}
-#endif
int board_init(void)
{