Mirrors/u-boot
1
0
Fork 0
mirror of https://source.denx.de/u-boot/u-boot.git synced 2026-06-13 15:03:58 +03:00
Code Issues Packages Projects Releases Wiki Activity

mtd: spi: renesas: Configure DRDRENR register

Browse Source 
Make sure DRDRENR register is configured before performing external
address space read. This register might have been configured by a
prior stage bootloader and leaving it unconfigured would interfere
with U-Boot operation. Since U-Boot RPC SPI driver does not support
DDR data transfer mode yet, set this register unconditionally to 0.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
This commit is contained in:
Marek Vasut
2024-08-31 22:31:46 +02:00
parent 3fba388e61
commit c90795076b
1 changed files with 1 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/spi/renesas_rpc_spi.c
View File

@@ -294,6 +294,7 @@ static int rpc_spi_mem_exec_op(struct spi_slave *spi,
writel(8 * op->dummy.nbytes - 1, priv->regs + RPC_DRDMCR);
writel(0, priv->regs + RPC_DROPR);
writel(0, priv->regs + RPC_DRDRENR);
writel(smenr, priv->regs + RPC_DRENR);
memcpy_fromio(din, (void *)(priv->extr + offset), op->data.nbytes);