Hi, There has already been multiple tentatives trying to add support for the Sama5d2 security module and in particular, access to its SRAM. After multiple discussions, I believe adding support in the sram driver/framework is probably the best because it allows exporting the SRAM to the kernel, to userspace and also to run code from it.
As the support for the sama5d2 securam is fairly small, I've included it directly in the mmio-sram driver. Changes in v2: - Fixed an issued in the sama5d2 dtsi - Use regmap_read_poll_timeout and of_device_get_match_data as suggested by Philipp - Shrink the timeout to 500ms - Added Rob's acks Cc: Arnd Bergmann <a...@arndb.de> Cc: Philipp Zabel <p.za...@pengutronix.de> Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org> Alexandre Belloni (6): Documentation: dt: atmel-at91: Document secumod bindings ARM: at91: add secumod register definitions ARM: dts: at91: sama5d2: Add secumod node misc: sram: document new compatible misc: sram: add Atmel securam support ARM: dts: at91: sama5d2: Add securam node .../devicetree/bindings/arm/atmel-at91.txt | 17 +++++++++ Documentation/devicetree/bindings/sram/sram.txt | 2 +- arch/arm/boot/dts/sama5d2.dtsi | 19 ++++++++++ drivers/misc/sram.c | 42 ++++++++++++++++++---- include/soc/at91/atmel-secumod.h | 20 +++++++++++ 5 files changed, 92 insertions(+), 8 deletions(-) create mode 100644 include/soc/at91/atmel-secumod.h -- 2.9.3