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authorAnders Berg <anders.berg@avagotech.com>2014-09-17 08:46:58 +0200
committerMark Brown <broonie@kernel.org>2014-09-24 10:25:52 +0100
commitdb4fa45ed3182d8206af241811dfc99369ffa849 (patch)
tree3da0916f874df0cdb7def2e724cf6f32958b30ce /include/linux/amba
parent73e3f1eb51888303389f2dc2219c97ce34ca6db0 (diff)
downloadop-kernel-dev-db4fa45ed3182d8206af241811dfc99369ffa849.zip
op-kernel-dev-db4fa45ed3182d8206af241811dfc99369ffa849.tar.gz
spi: pl022: Add support for chip select extension
Add support for a extended PL022 which has an extra register for controlling up to five chip select signals. This controller is found on the AXM5516 SoC. Unfortunately the PrimeCell identification registers are identical to a standard ARM PL022. To work around this, the peripheral ID must be overridden in the device tree using the "arm,primecell-periphid" property with the value 0x000b6022. Signed-off-by: Anders Berg <anders.berg@avagotech.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/linux/amba')
-rw-r--r--include/linux/amba/bus.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h
index fdd7e1b..c324f57 100644
--- a/include/linux/amba/bus.h
+++ b/include/linux/amba/bus.h
@@ -44,10 +44,15 @@ struct amba_driver {
const struct amba_id *id_table;
};
+/*
+ * Constants for the designer field of the Peripheral ID register. When bit 7
+ * is set to '1', bits [6:0] should be the JEP106 manufacturer identity code.
+ */
enum amba_vendor {
AMBA_VENDOR_ARM = 0x41,
AMBA_VENDOR_ST = 0x80,
AMBA_VENDOR_QCOM = 0x51,
+ AMBA_VENDOR_LSI = 0xb6,
};
extern struct bus_type amba_bustype;
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