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This patch implements the basic single data conversion support for the SPEAr600 SoC ADC. The register layout of SPEAr600 differs a bit from other SPEAr SoC variants (e.g. SPEAr3xx). These differences are handled via DT compatible testing. Resulting in a multi-arch binary. This driver is currently tested only on SPEAr600. Future patches may add support for other SoC variants (SPEAr3xx) and features like software buffer or DMA. Signed-off-by: Stefan Roese <sr@denx.de> Acked-by: Jonathan Cameron <jic23@kernel.org> Acked-by: Viresh Kumar <viresh.kumar@st.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>