-----Original Message----- From: Chuanhua Han chuanhua.han@nxp.com Sent: Thursday, August 1, 2019 2:07 PM To: Prabhakar Kushwaha prabhakar.kushwaha@nxp.com; Ashish Kumar ashish.kumar@nxp.com; Rajesh Bhagat rajesh.bhagat@nxp.com Cc: u-boot@lists.denx.de; Chuanhua Han chuanhua.han@nxp.com Subject: [PATCH] armv8: ls1088aqds: support DSPI mode by hwconfig
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
This patch has been applied to fsl-qoriq master, awaiting upstream.
--pk