[U-Boot] [PATCH 6/9 v2] board/t1024qds: update pin multiplexing

[Shengzhou Liu]

Add multiplexing support among SPI flash, TDM riser card and SDXC.
it routes SPI pins to SPI flash by default.
Route SPI pins to SD slot if "adaptor=sdxc" is set in hwconfig.
Route SPI pins to TDM riser card and do fixup for dts if "pin_mux=tdm"
is set in hwconfig.

Signed-off-by: Shengzhou Liu <Shengzhou.Liu at freescale.com>
Signed-off-by: Xie Xiaobo <X.Xie at freescale.com>
Signed-off-by: Zhao Qiang <B45475 at freescale.com>
---
v2: refine commit message.

 board/freescale/t102xqds/t102xqds.c       | 26 ++++++++++++++++++++++++++
 board/freescale/t102xqds/t102xqds_qixis.h |  7 +++++--
 2 files changed, 31 insertions(+), 2 deletions(-)

diff --git a/board/freescale/t102xqds/t102xqds.c b/board/freescale/t102xqds/t102xqds.c
index f7af332..f7fc869 100644
--- a/board/freescale/t102xqds/t102xqds.c
+++ b/board/freescale/t102xqds/t102xqds.c
@@ -165,6 +165,8 @@ static void board_mux_setup(void)
 		/* Route QE_TDM multiplexed signals to TDM Riser slot */
 		QIXIS_WRITE(brdcfg[15], brdcfg15 | BRDCFG15_DIUSEL_TDM);
 		QIXIS_WRITE(brdcfg[13], BRDCFG13_TDM_INTERFACE << 2);
+		QIXIS_WRITE(brdcfg[5], (QIXIS_READ(brdcfg[5]) &
+			    ~BRDCFG5_SPIRTE_MASK) | BRDCFG5_SPIRTE_TDM);
 	} else if (hwconfig_arg_cmp("pin_mux", "ucc")) {
 		/* to UCC (ProfiBus) interface */
 		QIXIS_WRITE(brdcfg[15], brdcfg15 | BRDCFG15_DIUSEL_UCC);
@@ -176,6 +178,11 @@ static void board_mux_setup(void)
 		QIXIS_WRITE(brdcfg[15], brdcfg15 | BRDCFG15_LCDFM |
 			    BRDCFG15_LCDPD | BRDCFG15_DIUSEL_LCD);
 	}
+
+	if (hwconfig_arg_cmp("adaptor", "sdxc"))
+		/* Route SPI_CS multiplexed signals to SD slot */
+		QIXIS_WRITE(brdcfg[5], (QIXIS_READ(brdcfg[5]) &
+			    ~BRDCFG5_SPIRTE_MASK) | BRDCFG5_SPIRTE_SDHC);
 }
 #endif
 
@@ -265,6 +272,24 @@ int misc_init_r(void)
 	return 0;
 }
 
+void fdt_fixup_spi_mux(void *blob)
+{
+	int nodeoff = 0;
+
+	if (hwconfig_arg_cmp("pin_mux", "tdm")) {
+		while ((nodeoff = fdt_node_offset_by_compatible(blob, 0,
+			"eon,en25s64")) >= 0) {
+			fdt_del_node(blob, nodeoff);
+		}
+	} else {
+		/* remove tdm node */
+		while ((nodeoff = fdt_node_offset_by_compatible(blob, 0,
+			"maxim,ds26522")) >= 0) {
+			fdt_del_node(blob, nodeoff);
+		}
+	}
+}
+
 void ft_board_setup(void *blob, bd_t *bd)
 {
 	phys_addr_t base;
@@ -291,6 +316,7 @@ void ft_board_setup(void *blob, bd_t *bd)
 	fdt_fixup_fman_ethernet(blob);
 	fdt_fixup_board_enet(blob);
 #endif
+	fdt_fixup_spi_mux(blob);
 }
 
 void qixis_dump_switch(void)
diff --git a/board/freescale/t102xqds/t102xqds_qixis.h b/board/freescale/t102xqds/t102xqds_qixis.h
index ad83f03..a429fb7 100644
--- a/board/freescale/t102xqds/t102xqds_qixis.h
+++ b/board/freescale/t102xqds/t102xqds_qixis.h
@@ -17,6 +17,9 @@
 #define BRDCFG5_IMX_MASK		0xC0
 #define BRDCFG5_IMX_DIU			0x80
 
+#define BRDCFG5_SPIRTE_MASK		0x07
+#define BRDCFG5_SPIRTE_TDM		0x01
+#define BRDCFG5_SPIRTE_SDHC		0x02
 #define BRDCFG9_XFI_TX_DISABLE		0x10
 
 /* BRDCFG13[0:5] TDM configuration and setup */
@@ -35,8 +38,8 @@
 #define BRDCFG15_DIUSEL_MASK		0x03
 #define BRDCFG15_DIUSEL_HDMI		0x00
 #define BRDCFG15_DIUSEL_LCD		0x01
-#define BRDCFG15_DIUSEL_UCC		0x10
-#define BRDCFG15_DIUSEL_TDM		0x11
+#define BRDCFG15_DIUSEL_UCC		0x02
+#define BRDCFG15_DIUSEL_TDM		0x03
 
 /* SYSCLK */
 #define QIXIS_SYSCLK_66			0x0
-- 
2.1.0.27.g96db324