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armv8: ls1088aqds: support DSPI mode by hwconfig

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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@nxp.com>
Reviewed-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
This commit is contained in:
Chuanhua Han 2019-08-01 16:36:57 +08:00 committed by Prabhakar Kushwaha
parent a02a9421f4
commit 1748990ab2
3 changed files with 39 additions and 0 deletions
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26
board/freescale/ls1088a/ls1088a.c
View file

@ -591,6 +591,32 @@ 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

11
board/freescale/ls1088a/ls1088a_qixis.h
View file

@ -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

2
include/configs/ls1088aqds.h
View file

@ -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 + \