[U-Boot] [PATCH v2 06/11] armv8: ls2080aqds: Config QSPI pin mux via FPGA in NAND boot

[Yuan Yao]

From: Yuan Yao <yao.yuan at nxp.com>

In order to access QSPI flash we must asserted ISO allowing
the DUT to access the full IFC domain.
But deasserted the unused ISO will allowing maximum performance.

So if we want to access QSPI flash when boot from NAND,
we should use the below board configuration:
Boot Source		ISO1	ISO2	IBOOT
On-board NAND		1	0	0
IFCCARD NAND		0	0	1

Signed-off-by: Yuan Yao <yao.yuan at nxp.com>
---
 arch/arm/include/asm/arch-fsl-layerscape/immap_lsch3.h | 2 ++
 board/freescale/ls2080aqds/ls2080aqds.c                | 9 +++++++++
 include/configs/ls2080aqds.h                           | 6 ++++++
 3 files changed, 17 insertions(+)

diff --git a/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch3.h b/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch3.h
index e5acae8..828a53b 100644
--- a/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch3.h
+++ b/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch3.h
@@ -94,6 +94,8 @@
 #define DCFG_PORSR1_RCW_SRC_NOR		0x12f00000
 #define DCFG_RCWSR13			0x130
 #define DCFG_RCWSR13_DSPI		(0 << 8)
+#define DCFG_RCWSR15			0x138
+#define DCFG_RCWSR15_IFCGRPABASE_QSPI	0x3
 
 #define DCFG_DCSR_BASE		0X700100000ULL
 #define DCFG_DCSR_PORCR1		0x000
diff --git a/board/freescale/ls2080aqds/ls2080aqds.c b/board/freescale/ls2080aqds/ls2080aqds.c
index 6e73829..7e09f11 100644
--- a/board/freescale/ls2080aqds/ls2080aqds.c
+++ b/board/freescale/ls2080aqds/ls2080aqds.c
@@ -207,6 +207,15 @@ int board_init(void)
 	else
 		config_board_mux(MUX_TYPE_SDHC);
 
+#if defined(CONFIG_NAND) && defined(CONFIG_FSL_QSPI)
+	val = in_le32(dcfg_ccsr + DCFG_RCWSR15 / 4);
+
+	if (DCFG_RCWSR15_IFCGRPABASE_QSPI == (val & (u32)0x3))
+		QIXIS_WRITE(brdcfg[9],
+			    (QIXIS_READ(brdcfg[9]) & 0xf8) |
+			     FSL_QIXIS_BRDCFG9_QSPI);
+#endif
+
 #ifdef CONFIG_ENV_IS_NOWHERE
 	gd->env_addr = (ulong)&default_environment[0];
 #endif
diff --git a/include/configs/ls2080aqds.h b/include/configs/ls2080aqds.h
index 3cba10a..ee51348 100644
--- a/include/configs/ls2080aqds.h
+++ b/include/configs/ls2080aqds.h
@@ -307,6 +307,12 @@ unsigned long get_board_ddr_clk(void);
 #define CONFIG_SPI_FLASH_SPANSION
 #define FSL_QSPI_FLASH_SIZE		(1 << 26) /* 64MB */
 #define FSL_QSPI_FLASH_NUM		4
+/*
+ * Verify QSPI when boot from NAND, QIXIS brdcfg9 need configure.
+ * If boot from on-board NAND, ISO1 = 1, ISO2 = 0, IBOOT = 0
+ * If boot from IFCCard NAND, ISO1 = 0, ISO2 = 0, IBOOT = 1
+ */
+#define FSL_QIXIS_BRDCFG9_QSPI		0x1
 #endif
 /*
  * MMC
-- 
2.1.0.27.g96db324