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path: root/arch/arm/mach-at91/soc.c
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2017-03-31ARM: at91: move SoC detection to its own driverAlexandre Belloni1-142/+0
To simplify machine init and as the soc_device struct is not used as the parent for on-chip devices anymore, move SoC detection to its own driver. Change in dmesg: - before: DMA: preallocated 256 KiB pool for atomic coherent allocations AT91: Detected SoC family: sama5d2 AT91: Detected SoC: sama5d27, revision 0 No ATAGs? clocksource: tcb_clksrc: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 184217874325 ns at_xdmac f0010000.dma-controller: 16 channels, mapped at 0xe085b000 SCSI subsystem initialized - after: DMA: preallocated 256 KiB pool for atomic coherent allocations No ATAGs? clocksource: tcb_clksrc: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 184217874325 ns at_xdmac f0010000.dma-controller: 16 channels, mapped at 0xe0859000 AT91: Detected SoC family: sama5d2 AT91: Detected SoC: sama5d27, revision 0 SCSI subsystem initialized Suggested-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2016-03-29ARM: at91: use chipid device for soc detectionLudovic Desroches1-18/+63
So far, the CIDR and EXID registers were in the DBGU interface. This device has disappeared with the SAMA5D2 family. These registers are exposed through a new device called chipid. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> [nicolas.ferre@atmel.com: remove useless warnings] Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Rob Herring <robh@kernel.org> [arnd@arndb.de: suggest to use static functions to reduce scope] Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-03-13ARM: at91: add soc detection infrastructureBoris BREZILLON1-0/+97
Add new structures and functions to handle AT91 SoC detection. [alexandre.belloni@free-electrons.com: reworked DBGU detection] Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>