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[U-Boot,v2,01/11] armv8: ls2080aqds: Select QSPI CLK div via SCFG

Message ID 1457336877-19119-2-git-send-email-yao.yuan@freescale.com
State Changes Requested
Delegated to: York Sun
Headers show

Commit Message

Yao Yuan March 7, 2016, 7:47 a.m. UTC 
From: Yuan Yao <yao.yuan@nxp.com>

QSPI module output SCLK divisor value is configured through SCFG.

Signed-off-by: Yuan Yao <yao.yuan@nxp.com>
---
 arch/arm/include/asm/arch-fsl-layerscape/immap_lsch3.h | 1 +
 board/freescale/ls2080aqds/ls2080aqds.c                | 5 +++++
 2 files changed, 6 insertions(+)
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Patch

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 91f3ce8..e5acae8 100644
--- a/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch3.h
+++ b/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch3.h
@@ -101,6 +101,7 @@ 
 /* Supplemental Configuration */
 #define SCFG_BASE		0x01fc0000
 #define SCFG_USB3PRM1CR			0x000
+#define SCFG_QSPICLKCTLR	0x10
 
 #define TP_ITYP_AV		0x00000001	/* Initiator available */
 #define TP_ITYP_TYPE(x)	(((x) & 0x6) >> 1)	/* Initiator Type */
diff --git a/board/freescale/ls2080aqds/ls2080aqds.c b/board/freescale/ls2080aqds/ls2080aqds.c
index aa256a2..6e73829 100644
--- a/board/freescale/ls2080aqds/ls2080aqds.c
+++ b/board/freescale/ls2080aqds/ls2080aqds.c
@@ -25,6 +25,7 @@ 
 
 #define PIN_MUX_SEL_SDHC	0x00
 #define PIN_MUX_SEL_DSPI	0x0a
+#define SCFG_QSPICLKCTRL_DIV_20	(5 << 27)
 
 #define SET_SDHC_MUX_SEL(reg, value)	((reg & 0xf0) | value)
 
@@ -218,6 +219,10 @@  int board_init(void)
 int board_early_init_f(void)
 {
 	fsl_lsch3_early_init_f();
+#ifdef CONFIG_FSL_QSPI
+	/* input clk: 1/2 platform clk, output: input/20 */
+	out_le32(SCFG_BASE + SCFG_QSPICLKCTLR, SCFG_QSPICLKCTRL_DIV_20);
+#endif
 	return 0;
 }