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Paul Walmsley ce7a10b0ff ARM: 8334/1: amba: tegra-ahb: detect and correct bogus base address ... amba: tegra-ahb: detect and correct bogus base address From a hardware SoC integration point of view, the starting address of this IP block in the existing Tegra SoC DT files is off by 4 bytes from the actual base address. Since we attempt to make old DT files forward-compatible with newer kernels, we cannot fix the IP block base address in old DT data. This patch works around the problem by detecting the four byte base address offset in the driver code, and correcting it if it's detected. (In general, IP block base addresses almost always have a null low byte.) Future SoC DT data for Tegra AHB should use the correct Tegra AHB base address, in cases where there is no DT data backward compatibility requirement. This patch is a revision of the patch originally titled "amba: tegra-ahb: use correct base address for future chip support". This revision implements changes requested by Russell King: http://marc.info/?l=linux-tegra&m=142658851825062&w=2 http://marc.info/?l=linux-tegra&m=142658873925178&w=2 Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Paul Walmsley <pwalmsley@nvidia.com> Cc: Alexandre Courbot <gnurou@gmail.com> Cc: Hiroshi DOYU <hdoyu@nvidia.com> Cc: Stephen Warren <swarren@wwwdotorg.org> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: linux-kernel@vger.kernel.org Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>		10 years ago
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Kconfig	ARM: tegra: Move AHB Kconfig to drivers/amba	10 years ago
Makefile	ARM: tegra: Add Tegra AHB driver	13 years ago
bus.c	ARM: 8256/1: driver coamba: add device binding path 'driver_override'	10 years ago
tegra-ahb.c	ARM: 8334/1: amba: tegra-ahb: detect and correct bogus base address	10 years ago