shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-07 19:30:30 +09:00
Code Issues Packages Projects Releases Wiki Activity

mmc: fix eco setting for uhs tune

Browse Source
This commit is contained in:
lintao
2014-09-05 16:41:07 +08:00
parent 2d3973be0f
commit cf748bf2cc
1 changed files with 12 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
drivers/mmc/host/dw_mmc-rockchip.c
View File

@@ -358,28 +358,29 @@ static int dw_mci_rockchip_execute_tuning(struct dw_mci_slot *slot, u32 opcode,
So we take average --- 60ps, (1.66ns/ 2) = 0.83(middle-value),TAKE 0.9
0.9 / 60ps = 15 delayline
*/
if(cpu_is_rk3288()){
ref = ((FREQ_REF_150MHZ + host->bus_hz - 1) / host->bus_hz);
step = (15 * ref);
if (cpu_is_rk3288() && !(rockchip_get_cpu_version() > 0)) {
/* RK3288, non-eco */
ref = DIV_ROUND_UP(FREQ_REF_150MHZ, host->bus_hz);
step = (15 * ref);
if(step > MAX_DELAY_LINE){
if (step > MAX_DELAY_LINE) {
step = MAX_DELAY_LINE;
MMC_DBG_WARN_FUNC(host->mmc,
"execute tuning: TOO LARGE STEP![%s]", mmc_hostname(host->mmc));
}
MMC_DBG_INFO_FUNC(host->mmc,
}
MMC_DBG_INFO_FUNC(host->mmc,
"execute tuning: SOC is RK3288, ref = %d, step = %d[%s]",
ref, step, mmc_hostname(host->mmc));
}else{
step = (15 * ((FREQ_REF_150MHZ / host->bus_hz) * 100)) / 100;
} else {
step = (15 * ((FREQ_REF_150MHZ / host->bus_hz) * 100)) / 100;
if(step > MAX_DELAY_LINE){
if (step > MAX_DELAY_LINE) {
step = MAX_DELAY_LINE;
MMC_DBG_WARN_FUNC(host->mmc,
"execute tuning: TOO LARGE STEP![%s]", mmc_hostname(host->mmc));
}
MMC_DBG_INFO_FUNC(host->mmc,
}
MMC_DBG_INFO_FUNC(host->mmc,
"execute tuning: SOC is UNKNOWN, step = %d[%s]",
step, mmc_hostname(host->mmc));
}