powerpc/85xx: Add support usb2/etsec and tdm/audio pin multiplex on P1022DS

For soc which have pin multiplex relation, some of them can't enable
simultaneously. This patch add environment var 'hwconfig' content
defination for them. you can enable some one function by setting
environment var 'hwconfig' content and reset board. Detail setting
please refer doc/README.p1022ds

Signed-off-by: Jiang Yutang <b14898@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

arch/powerpc/include/asm/immap_85xx.h

@@ -1937,7 +1937,17 @@ typedef struct ccsr_gur {
 #define MPC85xx_PMUXCR_QE10		0x00000020
 #define MPC85xx_PMUXCR_QE11		0x00000010
 #define MPC85xx_PMUXCR_QE12		0x00000008
+#if defined(CONFIG_P1013) || defined(CONFIG_P1022)
+#define MPC85xx_PMUXCR_TDM_MASK		0x0001cc00
+#define MPC85xx_PMUXCR_TDM		0x00014800
+#define MPC85xx_PMUXCR_SPI_MASK		0x00600000
+#define MPC85xx_PMUXCR_SPI		0x00000000
+#endif
 	u32	pmuxcr2;	/* Alt. function signal multiplex control 2 */
+#if defined(CONFIG_P1013) || defined(CONFIG_P1022)
+#define MPC85xx_PMUXCR2_ETSECUSB_MASK	0x001f1000
+#define MPC85xx_PMUXCR2_USB		0x00150000
+#endif
 	u8	res6[8];
 	u32	devdisr;	/* Device disable control */
 #define MPC85xx_DEVDISR_PCI1		0x80000000

board/freescale/p1022ds/p1022ds.c

@@ -93,11 +93,19 @@ int checkboard(void)
 /* Choose the 11.2896Mhz codec reference clock */
 #define CONFIG_PIXIS_BRDCFG1_AUDCLK_11		0x01
 
+/* Connect to USB2 */
+#define CONFIG_PIXIS_BRDCFG0_USB2		0x10
+/* Connect to TFM bus */
+#define CONFIG_PIXIS_BRDCFG1_TDM		0x0c
+/* Connect to SPI */
+#define CONFIG_PIXIS_BRDCFG0_SPI		0x80
+
 int misc_init_r(void)
 {
 	u8 temp;
 	const char *audclk;
 	size_t arglen;
+	ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
 
 	/* For DVI, enable the TFP410 Encoder. */
 
@@ -115,22 +123,48 @@ int misc_init_r(void)
 		return -1;
 	debug("DVI Encoder Read: 0x%02x\n",temp);
 
+	/* Enable the USB2 in PMUXCR2 and FGPA */
+	if (hwconfig("usb2")) {
+		clrsetbits_be32(&gur->pmuxcr2, MPC85xx_PMUXCR2_ETSECUSB_MASK,
+			MPC85xx_PMUXCR2_USB);
+		setbits_8(&pixis->brdcfg0, CONFIG_PIXIS_BRDCFG0_USB2);
+	}
+
+	/* tdm and audio can not enable simultaneous*/
+	if (hwconfig("tdm") && hwconfig("audclk")){
+		printf("WARNING: TDM and AUDIO can not be enabled simultaneous !\n");
+		return -1;
+	}
+
+	/* Enable the TDM in PMUXCR and FGPA */
+	if (hwconfig("tdm")) {
+		clrsetbits_be32(&gur->pmuxcr, MPC85xx_PMUXCR_TDM_MASK,
+			MPC85xx_PMUXCR_TDM);
+		setbits_8(&pixis->brdcfg1, CONFIG_PIXIS_BRDCFG1_TDM);
+		/* TDM need some configration option by SPI */
+		clrsetbits_be32(&gur->pmuxcr, MPC85xx_PMUXCR_SPI_MASK,
+			MPC85xx_PMUXCR_SPI);
+		setbits_8(&pixis->brdcfg0, CONFIG_PIXIS_BRDCFG0_SPI);
+	}
+
 	/*
 	 * Enable the reference clock for the WM8776 codec, and route the MUX
 	 * pins for SSI. The default is the 12.288 MHz clock
 	 */
 
-	temp = in_8(&pixis->brdcfg1) & ~(CONFIG_PIXIS_BRDCFG1_SSI_TDM_MASK |
-		CONFIG_PIXIS_BRDCFG1_AUDCLK_MASK);
-	temp |= CONFIG_PIXIS_BRDCFG1_SSI_TDM_SSI;
-
-	audclk = hwconfig_arg("audclk", &arglen);
-	/* Check the first two chars only */
-	if (audclk && (strncmp(audclk, "11", 2) == 0))
-		temp |= CONFIG_PIXIS_BRDCFG1_AUDCLK_11;
-	else
-		temp |= CONFIG_PIXIS_BRDCFG1_AUDCLK_12;
-	out_8(&pixis->brdcfg1, temp);
+	if (hwconfig("audclk")) {
+		temp = in_8(&pixis->brdcfg1) & ~(CONFIG_PIXIS_BRDCFG1_SSI_TDM_MASK |
+			CONFIG_PIXIS_BRDCFG1_AUDCLK_MASK);
+		temp |= CONFIG_PIXIS_BRDCFG1_SSI_TDM_SSI;
+
+		audclk = hwconfig_arg("audclk", &arglen);
+		/* Check the first two chars only */
+		if (audclk && (strncmp(audclk, "11", 2) == 0))
+			temp |= CONFIG_PIXIS_BRDCFG1_AUDCLK_11;
+		else
+			temp |= CONFIG_PIXIS_BRDCFG1_AUDCLK_12;
+		setbits_8(&pixis->brdcfg1, temp);
+	}
 
 	return 0;
 }

doc/README.p1022ds

@@ -0,0 +1,24 @@
+Overview
+--------
+P1022ds is a Low End Dual core platform supporting the P1022 processor
+of QorIQ series. P1022 is an e500 based dual core SOC.
+
+
+Pin Multiplex(hwconfig setting)
+-------------------------------
+Add the environment 'usb2', 'audclk' and 'tdm' to support pin multiplex
+via hwconfig, i.e:
+'setenv hwconfig usb2' to enable USB2 and disable eTsec2
+'setenv hwconfig tdm' to enable TDM and disable Audio
+'setenv hwconfig audclk:12' to enable Audio(codec clock sources is 12MHz)
+ and disable TDM
+'setenv hwconfig 'usb2;tdm' to enable USB2 and TDM, disable eTsec2 and Audio
+'setenv hwconfig 'usb2;audclk:11' to enable USB2 and Audio(codec clock sources
+ is 11MHz), disable eTsec2 and TDM
+
+Warning: TDM and AUDIO can not enable simultaneous !
+and AUDIO codec clock sources only setting as 11MHz or 12MHz !
+'setenv hwconfig 'audclk:12;tdm'	--- error !
+'setenv hwconfig 'audclk:11;tdm'	--- error !
+'setenv hwconfig 'audclk:10'		--- error !
+