diff options
| author | Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> | 2013-12-18 15:31:55 +0900 |
|---|---|---|
| committer | Jagannadha Sutradharudu Teki <jaganna@xilinx.com> | 2013-12-18 23:23:41 +0530 |
| commit | 16f47c9c510a61ee91d6b9d02dd723522beff80f (patch) | |
| tree | 390c3a78b921a185d08ef91582fb76ef53a7f6d8 /doc/SPI | |
| parent | 57af475389c1355f630cdafc1f3acc42347df669 (diff) | |
spi: Add support SH Quad SPI driver
This patch adds a driver for Renesas SoC's Quad SPI bus.
This supports with 8 bits per transfer to use with SPI flash.
Signed-off-by: Kouei Abe <kouei.abe.cp@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Diffstat (limited to 'doc/SPI')
| -rw-r--r-- | doc/SPI/README.sh_qspi_test | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/doc/SPI/README.sh_qspi_test b/doc/SPI/README.sh_qspi_test new file mode 100644 index 00000000000..8a33fec32fd --- /dev/null +++ b/doc/SPI/README.sh_qspi_test @@ -0,0 +1,38 @@ +------------------------------------------------- + Simple steps used to test the SH-QSPI at U-Boot +------------------------------------------------- + +#0, Currently, SH-QSPI is used by lager board (Renesas ARM SoC R8A7790) + and koelsch board (Renesas ARM SoC R8A7791). These boot from SPI ROM + basically. Thus, U-Boot start, SH-QSPI will is operating normally. + +#1, build U-Boot and load u-boot.bin + + => tftpboot 40000000 u-boot.bin + sh_eth Waiting for PHY auto negotiation to complete.. done + sh_eth: 100Base/Half + Using sh_eth device + TFTP from server 192.168.169.1; our IP address is 192.168.169.79 + Filename 'u-boot.bin'. + Load address: 0x40000000 + Loading: ############ + 2.5 MiB/s + done + Bytes transferred = 175364 (2ad04 hex) + +#2, Commands to erase/write u-boot to flash device + + Note: This method is description of the lager board. If you want to use the + other boards, please change the value according to each environment. + + => sf probe 0 + SF: Detected S25FL512S_256K with page size 512 Bytes, erase size 64 KiB, total 64 MiB + => sf erase 80000 40000 + SF: 262144 bytes @ 0x80000 Erased: OK + => sf write 40000000 80000 175364 + SF: 1528676 bytes @ 0x80000 Written: OK + => + +#3, Push reset button. + + If you're written correctly and driver works properly, U-Boot starts. |