| Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1 | # |
| 2 | # MMC core configuration |
| 3 | # |
| Srinivas Kandagatla | d97a1e5 | 2016-04-14 14:02:16 +0100 | [diff] [blame] | 4 | config PWRSEQ_EMMC |
| 5 | tristate "HW reset support for eMMC" |
| 6 | default y |
| 7 | depends on OF |
| 8 | help |
| 9 | This selects Hardware reset support aka pwrseq-emmc for eMMC |
| 10 | devices. By default this option is set to y. |
| 11 | |
| 12 | This driver can also be built as a module. If so, the module |
| 13 | will be called pwrseq_emmc. |
| 14 | |
| Matt Ranostay | de19b4c | 2017-01-23 19:08:30 -0800 | [diff] [blame] | 15 | config PWRSEQ_SD8787 |
| 16 | tristate "HW reset support for SD8787 BT + Wifi module" |
| 17 | depends on OF && (MWIFIEX || BT_MRVL_SDIO) |
| 18 | help |
| 19 | This selects hardware reset support for the SD8787 BT + Wifi |
| 20 | module. By default this option is set to n. |
| 21 | |
| 22 | This driver can also be built as a module. If so, the module |
| 23 | will be called pwrseq_sd8787. |
| 24 | |
| Srinivas Kandagatla | d97a1e5 | 2016-04-14 14:02:16 +0100 | [diff] [blame] | 25 | config PWRSEQ_SIMPLE |
| 26 | tristate "Simple HW reset support for MMC" |
| 27 | default y |
| 28 | depends on OF |
| 29 | help |
| 30 | This selects simple hardware reset support aka pwrseq-simple for MMC |
| 31 | devices. By default this option is set to y. |
| 32 | |
| 33 | This driver can also be built as a module. If so, the module |
| 34 | will be called pwrseq_simple. |
| Ulf Hansson | f397c8d | 2016-12-08 11:23:49 +0100 | [diff] [blame] | 35 | |
| 36 | config MMC_BLOCK |
| 37 | tristate "MMC block device driver" |
| 38 | depends on BLOCK |
| 39 | default y |
| 40 | help |
| 41 | Say Y here to enable the MMC block device driver support. |
| 42 | This provides a block device driver, which you can use to |
| 43 | mount the filesystem. Almost everyone wishing MMC support |
| 44 | should say Y or M here. |
| 45 | |
| 46 | config MMC_BLOCK_MINORS |
| 47 | int "Number of minors per block device" |
| 48 | depends on MMC_BLOCK |
| 49 | range 4 256 |
| 50 | default 8 |
| 51 | help |
| 52 | Number of minors per block device. One is needed for every |
| 53 | partition on the disk (plus one for the whole disk). |
| 54 | |
| 55 | Number of total MMC minors available is 256, so your number |
| 56 | of supported block devices will be limited to 256 divided |
| 57 | by this number. |
| 58 | |
| 59 | Default is 8 to be backwards compatible with previous |
| 60 | hardwired device numbering. |
| 61 | |
| 62 | If unsure, say 8 here. |
| 63 | |
| 64 | config MMC_BLOCK_BOUNCE |
| 65 | bool "Use bounce buffer for simple hosts" |
| 66 | depends on MMC_BLOCK |
| 67 | default y |
| 68 | help |
| 69 | SD/MMC is a high latency protocol where it is crucial to |
| 70 | send large requests in order to get high performance. Many |
| 71 | controllers, however, are restricted to continuous memory |
| 72 | (i.e. they can't do scatter-gather), something the kernel |
| 73 | rarely can provide. |
| 74 | |
| 75 | Say Y here to help these restricted hosts by bouncing |
| 76 | requests back and forth from a large buffer. You will get |
| 77 | a big performance gain at the cost of up to 64 KiB of |
| 78 | physical memory. |
| 79 | |
| 80 | If unsure, say Y here. |
| 81 | |
| 82 | config SDIO_UART |
| 83 | tristate "SDIO UART/GPS class support" |
| 84 | depends on TTY |
| 85 | help |
| 86 | SDIO function driver for SDIO cards that implements the UART |
| 87 | class, as well as the GPS class which appears like a UART. |
| 88 | |
| 89 | config MMC_TEST |
| 90 | tristate "MMC host test driver" |
| 91 | help |
| 92 | Development driver that performs a series of reads and writes |
| 93 | to a memory card in order to expose certain well known bugs |
| 94 | in host controllers. The tests are executed by writing to the |
| 95 | "test" file in debugfs under each card. Note that whatever is |
| 96 | on your card will be overwritten by these tests. |
| 97 | |
| 98 | This driver is only of interest to those developing or |
| 99 | testing a host driver. Most people should say N here. |
| 100 | |