Hi, last time I posted was a bit close to the merge window, so I'm reposting now. Greg, Arnd, could you take the first two patches?
These patches add support to configure on-chip SRAM via device-tree node or platform data and to obtain the resulting genalloc pool from the struct device pointer or a phandle pointing at the device tree node. This allows drivers to allocate SRAM with the genalloc API without hard-coding the genalloc pool pointer. The on-chip SRAM on i.MX53 and i.MX6q can be registered via device tree and changed to use the simple generic SRAM driver: ocram: ocram@00900000 { compatible = "fsl,imx-ocram", "mmio-sram"; reg = <0x00900000 0x3f000>; }; A driver that needs to allocate SRAM buffers, like the video processing unit on i.MX53, can retrieve the genalloc pool from a phandle in the device tree using of_get_named_gen_pool(node, "iram", 0) from patch 1: vpu@63ff4000 { /* ... */ iram = <&ocram>; }; Changes since v8: - The sram driver now matches against the "mmio-sram" compatible string. - Removed a whitespace error in the device tree binding documentation. regards Philipp --- Documentation/devicetree/bindings/media/coda.txt | 30 ++++++ Documentation/devicetree/bindings/misc/sram.txt | 16 +++ arch/arm/boot/dts/imx53.dtsi | 5 + arch/arm/boot/dts/imx6q.dtsi | 6 ++ drivers/media/platform/Kconfig | 1 - drivers/media/platform/coda.c | 45 +++++--- drivers/misc/Kconfig | 9 ++ drivers/misc/Makefile | 1 + drivers/misc/sram.c | 121 ++++++++++++++++++++++ include/linux/genalloc.h | 15 +++ include/linux/platform_data/coda.h | 18 ++++ lib/genalloc.c | 81 +++++++++++++++ 12 files changed, 333 insertions(+), 15 deletions(-) _______________________________________________ devicetree-discuss mailing list devicetree-discuss@lists.ozlabs.org https://lists.ozlabs.org/listinfo/devicetree-discuss