From: Lennert Buytenhek Date: Thu, 16 Oct 2008 05:02:44 +0000 (-0700) Subject: orion_spi: handle 88F6183 erratum X-Git-Tag: Ubuntu-5.2.0-15.16~32820 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=2bec19feabd53cba75e9dab0e79afbe868a37113;p=mirror_ubuntu-eoan-kernel.git orion_spi: handle 88F6183 erratum Add support to orion_spi for the 88F6183 ARM SoC by adding code to work around a 6183-specific erratum. Signed-off-by: Lennert Buytenhek Signed-off-by: David Brownell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/drivers/spi/orion_spi.c b/drivers/spi/orion_spi.c index b872bfaf4bd2..014becb7d530 100644 --- a/drivers/spi/orion_spi.c +++ b/drivers/spi/orion_spi.c @@ -364,6 +364,11 @@ static int orion_spi_setup(struct spi_device *spi) return -EINVAL; } + /* Fix ac timing if required. */ + if (orion_spi->spi_info->enable_clock_fix) + orion_spi_setbits(orion_spi, ORION_SPI_IF_CONFIG_REG, + (1 << 14)); + if (spi->bits_per_word == 0) spi->bits_per_word = 8; diff --git a/include/linux/spi/orion_spi.h b/include/linux/spi/orion_spi.h index b4d9fa6f797c..decf6d8c77b7 100644 --- a/include/linux/spi/orion_spi.h +++ b/include/linux/spi/orion_spi.h @@ -11,6 +11,7 @@ struct orion_spi_info { u32 tclk; /* no support yet */ + u32 enable_clock_fix; };