shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-08 11:50:43 +09:00
Code Issues Packages Projects Releases Wiki Activity

SDMMC:

Browse Source 
For example, how to modify the voltage of sdmmc0-gpio group in RK CPU.
Please modify your board-xxx-sdmmc-config.c youself , if you want to use 1.8V for SDMMC0-PIN.
This commit is contained in:
xbw
2013-02-21 19:01:55 +08:00
parent 877a539472
commit cca4647d97
1 changed files with 15 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
arch/arm/mach-rk30/board-rk3168-tb-sdmmc-conifg.c
View File

@@ -38,6 +38,21 @@
*/
#define RK29SDK_SD_CARD_PWR_EN RK30_PIN3_PA1
#define RK29SDK_SD_CARD_PWR_EN_LEVEL GPIO_LOW
double rk31sdk_get_sdmmc0_pin_io_voltage(void)
{
double voltage;
#define RK31SDK_SET_SDMMC0_PIN_VOLTAGE
/******************************************************************************
** Please tell me how much voltage of your SDMMC0-pin in your project.
**
** <20><><EFBFBD><EFBFBD>: <20>е<EFBFBD><D0B5><EFBFBD>Ŀ<EFBFBD><C4BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD>SDMMC0<43><30><EFBFBD>ڵ<EFBFBD>RK<52><4B><EFBFBD>ص<EFBFBD>IO<49>飬<EFBFBD><E9A3AC><EFBFBD><EFBFBD>1.8V, <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>3.3V,
** <20><><EFBFBD>м<EFBFBD>ͨ<EFBFBD><CDA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƽת<C6BD><D7AA>.<2E><>ô<EFBFBD><C3B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1>Ӧ<EFBFBD><D3A6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>voltageֵΪ 1.8
******************************************************************************/
voltage = 3.3;
return voltage;
}
/*
* define the card-detect-pin.