[U-Boot] [PATCH] armv8: ls1088aqds: support DSPI mode by hwconfig

[Chuanhua Han]

BRDCFG4[USBOSC] and BRDCFG5[SPR] register field of Qixis device is used
to control SPI and other IP signal routing.

USBOSC:
0= SPI_CLK used as external USB REFCLK input driven with 24.000 MHz.
SPI devices are unusable in this mode.
1= SPI_CLK used as SPI clock.
SPI devices are usable in this mode. USB block is clocked from
internal sources

SPR[3:2]:
SPI_CS / SDHC_DAT4:7 Routing (schematic net CFG_SPI_ROUTE[3:2]):
00= SDHC/eMMC 8-bit
01= SD Card Rev 2.0/3.0
10= SPI on-board memory
11= TDM Riser / SPI off-board connector.
The default value is 00 if an SDCard/eMMC card is selected as the boot
device.

SPR[1:0]:
SPI_SIN/SOUT/SCK Routing (schematic net CFG_SPI_ROUTE[1:0]):
00= SDHC Sync loop
01= TDM Riser / SPI off-board connector.
10= SPI on-board memory.
11= SPI off-board connector.

By default, the SPI feature is not available, so we need to configure
the above register fields to select the route to the SPI feature.

Signed-off-by: Chuanhua Han <chuanhua.han at nxp.com>
---
 board/freescale/ls1088a/ls1088a.c       | 26 ++++++++++++++++++++++++++
 board/freescale/ls1088a/ls1088a_qixis.h | 11 +++++++++++
 include/configs/ls1088aqds.h            |  2 ++
 3 files changed, 39 insertions(+)

diff --git a/board/freescale/ls1088a/ls1088a.c b/board/freescale/ls1088a/ls1088a.c
index a7af77d..12cc363 100644
--- a/board/freescale/ls1088a/ls1088a.c
+++ b/board/freescale/ls1088a/ls1088a.c
@@ -590,6 +590,32 @@ int misc_init_r(void)
 		QIXIS_WRITE(brdcfg[5], brdcfg5);
 	}
 #endif
+
+#ifdef CONFIG_TARGET_LS1088AQDS
+	 u8 brdcfg4, brdcfg5;
+
+	if (hwconfig("dspi-on-board")) {
+		brdcfg4 = QIXIS_READ(brdcfg[4]);
+		brdcfg4 &= ~BRDCFG4_USBOSC_MASK;
+		brdcfg4 |= BRDCFG4_SPI;
+		QIXIS_WRITE(brdcfg[4], brdcfg4);
+
+		brdcfg5 = QIXIS_READ(brdcfg[5]);
+		brdcfg5 &= ~BRDCFG5_SPR_MASK;
+		brdcfg5 |= BRDCFG5_SPI_ON_BOARD;
+		QIXIS_WRITE(brdcfg[5], brdcfg5);
+	} else if (hwconfig("dspi-off-board")) {
+		brdcfg4 = QIXIS_READ(brdcfg[4]);
+		brdcfg4 &= ~BRDCFG4_USBOSC_MASK;
+		brdcfg4 |= BRDCFG4_SPI;
+		QIXIS_WRITE(brdcfg[4], brdcfg4);
+
+		brdcfg5 = QIXIS_READ(brdcfg[5]);
+		brdcfg5 &= ~BRDCFG5_SPR_MASK;
+		brdcfg5 |= BRDCFG5_SPI_OFF_BOARD;
+		QIXIS_WRITE(brdcfg[5], brdcfg5);
+	}
+#endif
 	return 0;
 }
 #endif
diff --git a/board/freescale/ls1088a/ls1088a_qixis.h b/board/freescale/ls1088a/ls1088a_qixis.h
index c588526..e3502eb 100644
--- a/board/freescale/ls1088a/ls1088a_qixis.h
+++ b/board/freescale/ls1088a/ls1088a_qixis.h
@@ -41,4 +41,15 @@
 #define BRDCFG5_SPISDHC_MASK		0x0C
 #define BRDCFG5_FORCE_SD		0x08
 
+/* Definitions of QIXIS Registers for LS1088AQDS */
+
+/* BRDCFG4 */
+#define BRDCFG4_USBOSC_MASK   0x01
+#define BRDCFG4_SPI 0x01
+
+/* BRDCFG5 */
+#define BRDCFG5_SPR_MASK 0x0f
+#define BRDCFG5_SPI_ON_BOARD 0x0a
+#define BRDCFG5_SPI_OFF_BOARD 0x0f
+
 #endif
diff --git a/include/configs/ls1088aqds.h b/include/configs/ls1088aqds.h
index 8b62bbe..85e2061 100644
--- a/include/configs/ls1088aqds.h
+++ b/include/configs/ls1088aqds.h
@@ -17,6 +17,8 @@ unsigned long get_board_ddr_clk(void);
 #ifdef CONFIG_TFABOOT
 #define CONFIG_SYS_MMC_ENV_DEV		0
 
+#define CONFIG_MISC_INIT_R
+
 #define CONFIG_ENV_SIZE			0x20000
 #define CONFIG_ENV_OFFSET		0x500000
 #define CONFIG_ENV_ADDR			(CONFIG_SYS_FLASH_BASE + \
-- 
2.9.5