diff options
Diffstat (limited to 'src/soc/mediatek/mt8173/dramc_pi_calibration_api.c')
| -rw-r--r-- | src/soc/mediatek/mt8173/dramc_pi_calibration_api.c | 41 |
1 files changed, 19 insertions, 22 deletions
diff --git a/src/soc/mediatek/mt8173/dramc_pi_calibration_api.c b/src/soc/mediatek/mt8173/dramc_pi_calibration_api.c index 1237b2e0ba..fa69f2e4c2 100644 --- a/src/soc/mediatek/mt8173/dramc_pi_calibration_api.c +++ b/src/soc/mediatek/mt8173/dramc_pi_calibration_api.c @@ -13,9 +13,9 @@ * GNU General Public License for more details. */ -#include <delay.h> -#include <boardid.h> #include <arch/io.h> +#include <assert.h> +#include <delay.h> #include <stdlib.h> #include <soc/addressmap.h> #include <soc/dramc_common.h> @@ -305,32 +305,28 @@ static int dqs_gw_test(u32 channel) static u8 dqs_gw_fine_tune_calib(u32 channel, u8 fine_val) { u8 i, opt_fine_val; - s8 gw_ret[3], delta[3] = {0, -16, 16}; + s8 delta[7] = {-48, -32, -16, 0, 16, 32, 48}; + int matches = 0, sum = 0; - for (i = 0; i < 3; i++) { - /* adjust gw fine tune */ + /* fine tune range from 0 to 127 */ + fine_val = min(max(fine_val, 0 - delta[0]), 127 - delta[6]); + + /* test gw fine tune */ + for (i = 0; i < ARRAY_SIZE(delta); i++) { opt_fine_val = fine_val + delta[i]; set_gw_fine_factor(channel, opt_fine_val, 0); - /* get gw test result */ - gw_ret[i] = dqs_gw_test(channel); + if (dqs_gw_test(channel)) { + matches++; + sum += delta[i]; + } } - /* start fine tune adjustment from default fine value */ - opt_fine_val = fine_val; - - if (gw_ret[0] && gw_ret[1] && gw_ret[2]) { - opt_fine_val += ((delta[0] + delta[1] + delta[2]) / 3); - } - else if (gw_ret[0] && gw_ret[1]) { - opt_fine_val += ((delta[0] + delta[1]) / 2); - } - else if (gw_ret[0] && gw_ret[2]) { - opt_fine_val += ((delta[0] + delta[2]) / 2); - } - else { /* abnormal test result, set to default fine tune value */ - printk(BIOS_ERR, "[GW] ERROR, No found fine tune!!!\n"); + if (matches == 0) { + die("[GW] ERROR, Fine-Tuning failed.\n"); } + opt_fine_val = fine_val + (sum / matches); + return opt_fine_val; } @@ -737,7 +733,8 @@ u8 rx_datlat_cal(u32 channel, u8 rank, if (err[0]) { /* dle test error */ - printk(BIOS_ERR, "[DLE] calibration ERROR!\n"); + printk(BIOS_ERR, "[DLE] CH:%d calibration ERROR CMP_ERR =%xh,\n", + channel, err[0]); } else { /* judge dle test result */ for (i = 0; i < DLE_TEST_NUM; i++) { |