From 5e6fb69778fa41e685add00b73ed5f22c7a96166 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Mon, 11 Mar 2013 06:08:07 +0000 Subject: [PATCH] x86: spi: Set maximum write size for ICH This SPI controller can only write 64 bytes at a time. Add this restriction in so that 'sf write' works correct for blocks larger than 64 bytes. Signed-off-by: Simon Glass --- drivers/spi/ich.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/spi/ich.c b/drivers/spi/ich.c index ef1ce1d96c..8865df5bef 100644 --- a/drivers/spi/ich.c +++ b/drivers/spi/ich.c @@ -147,6 +147,11 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs, return NULL; } + /* + * Yes this controller can only write a small number of bytes at + * once! The limit is typically 64 bytes. + */ + ich->slave.max_write_size = ctlr.databytes; ich->speed = max_hz; return &ich->slave; -- 2.25.1