18c2ecf20Sopenharmony_ci* MTD SPI driver for Microchip 23K256 (and similar) serial SRAM 28c2ecf20Sopenharmony_ci 38c2ecf20Sopenharmony_ciRequired properties: 48c2ecf20Sopenharmony_ci- #address-cells, #size-cells : Must be present if the device has sub-nodes 58c2ecf20Sopenharmony_ci representing partitions. 68c2ecf20Sopenharmony_ci- compatible : Must be one of "microchip,mchp23k256" or "microchip,mchp23lcv1024" 78c2ecf20Sopenharmony_ci- reg : Chip-Select number 88c2ecf20Sopenharmony_ci- spi-max-frequency : Maximum frequency of the SPI bus the chip can operate at 98c2ecf20Sopenharmony_ci 108c2ecf20Sopenharmony_ciExample: 118c2ecf20Sopenharmony_ci 128c2ecf20Sopenharmony_ci spi-sram@0 { 138c2ecf20Sopenharmony_ci #address-cells = <1>; 148c2ecf20Sopenharmony_ci #size-cells = <1>; 158c2ecf20Sopenharmony_ci compatible = "microchip,mchp23k256"; 168c2ecf20Sopenharmony_ci reg = <0>; 178c2ecf20Sopenharmony_ci spi-max-frequency = <20000000>; 188c2ecf20Sopenharmony_ci }; 19