On 2016/11/28 23:44, Mason wrote:
Hello, @Shawn Lin, could you take a look below and tell me exactly which IP core(s) Rockchip is using in its SoCs?
From the Host Controller version register (0xfe) bit[7:0]: 0x2 : specification version number is 3.00 bit[15:8]: 0x10: Vendor version number is 1.0 Command Queueing version register (0x200) bit[11:8]: 0x5 eMMC Major version number bit[7:4]: 0x1 eMMC manor version number bit[3:0]: 0x0 eMMC version suffix User guide "eMMC 5.1/SD3.0/SDIO3.0 Host Controller" Revision number: 1.14 Released on Dec. 2014
Based on the feedback I received, here is an updated list of compatible strings and controller versions dealt with by the drivers/mmc/host/sdhci-of-arasan.c code. Xilinx Zynq: "SD2.0 / SDIO2.0 / MMC3.31 AHB Host Controller" "arasan,sdhci-8.9a" NB: 8.9a is the documentation revision (dated 2011-10-19) subsequent tweaks labeled 9.0a, 9.1a, 9.2a Xilinx ZynqMP: "SD3.0 / SDIO3.0 / eMMC4.51 AHB Host Controller" "arasan,sdhci-8.9a" NB: using the same compatible string as Zynq Sigma SMP87xx "SD3.0 / SDIO3.0 / eMMC4.4 AHB Host Controller" no compatible string yet, platform-specific init required APM: "SD3.0 / SDIO3.0 / eMMC4.41 AHB Host Controller" "arasan,sdhci-4.9a" NB: 4.9a appears to be the documentation revision no functional diff with "arasan,sdhci-8.9a" Rockchip Exact IP unknown, waiting for Shawn's answer "arasan,sdhci-5.1" NB: 5.1 appears to refer to the eMMC standard supported On a final note, there are many variations of the Arasan IP. I've tracked down at least the following: SD_2.0_SDIO_2.0__MMC_3.31_AHB_Host_Controller.pdf SD_3.0_SDIO_3.0_eMMC_4.41_OCP_Host_Controller.pdf SD_3.0_SDIO_3.0_eMMC_4.4__AHB_Host_Controller.pdf SD_3.0_SDIO_3.0_eMMC_4.51_Host_Controller.pdf SD_3.0_SDIO_3.0_eMMC_4.5__Host_Controller.pdf SD_4.1_SDIO_4.1_eMMC_4.51_Host_Controller.pdf SD_4.1_SDIO_4.1_eMMC_5.1__Host_Controller.pdf It seems to me the compatible string should specify the SD/SDIO version AND the eMMC version, since it seems many combinations are allowed, e.g. eMMC 4.51 has two possible SD versions. What do you think? Regards. -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
-- Best Regards Shawn Lin -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
