[U-Boot] [U-boot]: MMC: add sdhci generic framework
Hi, On.. drivers/mmc/sdhci.c + if (caps SDHCI_CAN_DO_8BIT) + mmc-host_caps |= MMC_MODE_8BIT; Here we are setting 8BIT bus width, if the sdhci capabilities register 18 bit is set. Does 18-bit is really denoted for 8-bit bus width, I cound't find it on spec, https://www.sdcard.org/developers/overview/host_controller/simple_spec/Simplified_SD_Host_Controller_Spec.pdf Due to this above error even my controller doesn't support 8-bit, it shows a 8-BIT supported. Request your help, correct me I am wrong. Thanks, Jagan. This email and any attachments are intended for the sole use of the named recipient(s) and contain(s) confidential information that may be proprietary, privileged or copyrighted under applicable law. If you are not the intended recipient, do not read, copy, or forward this email message or any attachments. Delete this email message and any attachments immediately. ___ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
Re: [U-Boot] [U-boot]: MMC: add sdhci generic framework
Jagannadha Sutradharudu Teki jagannadha.sutradharudu-teki at xilinx.com writes: Hi, On.. drivers/mmc/sdhci.c + if (caps SDHCI_CAN_DO_8BIT) + mmc-host_caps |= MMC_MODE_8BIT; Here we are setting 8BIT bus width, if the sdhci capabilities register 18 bit is set. Does 18-bit is really denoted for 8-bit bus width, I cound't find it on spec, https://www.sdcard.org/developers/overview/host_controller/simple_spec/Simpl ified_SD_Host_Controller_Spec.pdf Dear Jagannadha Sutradharudu Teki, The current u-boot SD/MMC driver supports the latest SD Specification. You should read version 3.0 of the specification. Due to this above error even my controller doesn't support 8-bit, it shows a 8-BIT supported. Request your help, correct me I am wrong. Thanks, Jagan. All the best, Rommel ___ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
Re: [U-Boot] [U-boot]: MMC: add sdhci generic framework
Hi Rommel, Thanks for your information. On Tue, May 21, 2013 at 4:20 AM, Rommel Custodio sessyargc+ub...@gmail.com wrote: Jagannadha Sutradharudu Teki jagannadha.sutradharudu-teki at xilinx.com writes: Hi, On.. drivers/mmc/sdhci.c + if (caps SDHCI_CAN_DO_8BIT) + mmc-host_caps |= MMC_MODE_8BIT; Here we are setting 8BIT bus width, if the sdhci capabilities register 18 bit is set. Does 18-bit is really denoted for 8-bit bus width, I cound't find it on spec, https://www.sdcard.org/developers/overview/host_controller/simple_spec/Simpl ified_SD_Host_Controller_Spec.pdf Dear Jagannadha Sutradharudu Teki, The current u-boot SD/MMC driver supports the latest SD Specification. You should read version 3.0 of the specification. OK, i saw the spec thanks. I think we need to add the fix on sdhci, for backward compatibility. Any concerns. Thanks, Jagan. ___ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
