^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) Imagination Technologies hardware hash accelerator
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) The hash accelerator provides hardware hashing acceleration for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) SHA1, SHA224, SHA256 and MD5 hashes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) Required properties:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) - compatible : "img,hash-accelerator"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) - reg : Offset and length of the register set for the module, and the DMA port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) - interrupts : The designated IRQ line for the hashing module.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) - dmas : DMA specifier as per Documentation/devicetree/bindings/dma/dma.txt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) - dma-names : Should be "tx"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) - clocks : Clock specifiers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) - clock-names : "sys" Used to clock the hash block registers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) "hash" Used to clock data through the accelerator
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) Example:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) hash: hash@18149600 {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) compatible = "img,hash-accelerator";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) reg = <0x18149600 0x100>, <0x18101100 0x4>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) interrupts = <GIC_SHARED 59 IRQ_TYPE_LEVEL_HIGH>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) dmas = <&dma 8 0xffffffff 0>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) dma-names = "tx";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) clocks = <&cr_periph SYS_CLK_HASH>, <&clk_periph PERIPH_CLK_ROM>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) clock-names = "sys", "hash";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) };