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>

1 files changed, 45 insertions, 11 deletions

diff --git a/board/freescale/p1022ds/p1022ds.c b/board/freescale/p1022ds/p1022ds.c
index 6f20dc3b9b..8b78404b85 100644
--- a/board/freescale/p1022ds/p1022ds.c
+++ b/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;
 }