From: long yu <long.yu@amlogic.com>
Date: Fri, 15 Mar 2019 07:38:47 +0000 (+0800)
Subject: storage: emmc: reduce cmd/ds/data pins driver strength for TL1 SOC [1/1]
X-Git-Tag: hardkernel-4.9.236-104~1573
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=912ef8f6f2753b2eb5e626f9a292ab6f33e610f8;p=platform%2Fkernel%2Flinux-amlogic.git

storage: emmc: reduce cmd/ds/data pins driver strength for TL1 SOC [1/1]

PD#SWPL-5334

Problem:
TX window is not stable

Solution:
Reduce the drive capability of emmc controller pins

Verify:
TL1-T962X2_X301

Change-Id: Ib641c66131c2dee41eb68fb262f4770f431676b9
Signed-off-by: long yu <long.yu@amlogic.com>
---

diff --git a/arch/arm/boot/dts/amlogic/mesontl1.dtsi b/arch/arm/boot/dts/amlogic/mesontl1.dtsi
index 4ab7e08..38d98da 100644
--- a/arch/arm/boot/dts/amlogic/mesontl1.dtsi
+++ b/arch/arm/boot/dts/amlogic/mesontl1.dtsi
@@ -1630,7 +1630,7 @@
 			function = "emmc";
 			input-enable;
 			bias-pull-up;
-			drive-strength = <3>;
+			drive-strength = <2>;
 		};
 	};
 
@@ -1649,7 +1649,7 @@
 			function = "emmc";
 			input-enable;
 			bias-pull-up;
-			drive-strength = <3>;
+			drive-strength = <2>;
 		};
 	};
 
@@ -1659,7 +1659,7 @@
 			function = "emmc";
 			input-enable;
 			bias-pull-down;
-			drive-strength = <3>;
+			drive-strength = <2>;
 		};
 	};
 
diff --git a/arch/arm/boot/dts/amlogic/tl1_t962x2_t309.dts b/arch/arm/boot/dts/amlogic/tl1_t962x2_t309.dts
index 4a62607..17de4a7 100644
--- a/arch/arm/boot/dts/amlogic/tl1_t962x2_t309.dts
+++ b/arch/arm/boot/dts/amlogic/tl1_t962x2_t309.dts
@@ -1629,11 +1629,12 @@
 			 "MMC_CAP_1_8V_DDR",
 			 "MMC_CAP_HW_RESET",
 			 "MMC_CAP_ERASE",
-			 "MMC_CAP_CMD23";
+			 "MMC_CAP_CMD23",
+			 "MMC_CAP_DRIVER_TYPE_D";
 		caps2 = "MMC_CAP2_HS200";
 		/* "MMC_CAP2_HS400";*/
 		f_min = <400000>;
-		f_max = <200000000>;
+		f_max = <198000000>;
 	};
 };
 
diff --git a/arch/arm/boot/dts/amlogic/tl1_t962x2_x301.dts b/arch/arm/boot/dts/amlogic/tl1_t962x2_x301.dts
index a044246c..c6e2a9a 100644
--- a/arch/arm/boot/dts/amlogic/tl1_t962x2_x301.dts
+++ b/arch/arm/boot/dts/amlogic/tl1_t962x2_x301.dts
@@ -1732,7 +1732,8 @@
 			 "MMC_CAP_1_8V_DDR",
 			 "MMC_CAP_HW_RESET",
 			 "MMC_CAP_ERASE",
-			 "MMC_CAP_CMD23";
+			 "MMC_CAP_CMD23",
+			 "MMC_CAP_DRIVER_TYPE_D";
 		caps2 = "MMC_CAP2_HS200", "MMC_CAP2_HS400";
 		f_min = <400000>;
 		f_max = <198000000>;
diff --git a/arch/arm64/boot/dts/amlogic/mesontl1.dtsi b/arch/arm64/boot/dts/amlogic/mesontl1.dtsi
index e2bbeb5..f7a4c8d 100644
--- a/arch/arm64/boot/dts/amlogic/mesontl1.dtsi
+++ b/arch/arm64/boot/dts/amlogic/mesontl1.dtsi
@@ -1611,7 +1611,7 @@
 			function = "emmc";
 			input-enable;
 			bias-pull-up;
-			drive-strength = <3>;
+			drive-strength = <2>;
 		};
 	};
 
@@ -1630,7 +1630,7 @@
 			function = "emmc";
 			input-enable;
 			bias-pull-up;
-			drive-strength = <3>;
+			drive-strength = <2>;
 		};
 	};
 
@@ -1640,7 +1640,7 @@
 			function = "emmc";
 			input-enable;
 			bias-pull-down;
-			drive-strength = <3>;
+			drive-strength = <2>;
 		};
 	};
 
diff --git a/arch/arm64/boot/dts/amlogic/tl1_t962x2_t309.dts b/arch/arm64/boot/dts/amlogic/tl1_t962x2_t309.dts
index a2d0a40c..2dad4fd 100644
--- a/arch/arm64/boot/dts/amlogic/tl1_t962x2_t309.dts
+++ b/arch/arm64/boot/dts/amlogic/tl1_t962x2_t309.dts
@@ -1634,11 +1634,12 @@
 			 "MMC_CAP_1_8V_DDR",
 			 "MMC_CAP_HW_RESET",
 			 "MMC_CAP_ERASE",
-			 "MMC_CAP_CMD23";
+			 "MMC_CAP_CMD23",
+			 "MMC_CAP_DRIVER_TYPE_D";
 		caps2 = "MMC_CAP2_HS200";
 		/* "MMC_CAP2_HS400";*/
 		f_min = <400000>;
-		f_max = <200000000>;
+		f_max = <198000000>;
 	};
 };
 
diff --git a/arch/arm64/boot/dts/amlogic/tl1_t962x2_x301.dts b/arch/arm64/boot/dts/amlogic/tl1_t962x2_x301.dts
index 465e88f..63c65b6 100644
--- a/arch/arm64/boot/dts/amlogic/tl1_t962x2_x301.dts
+++ b/arch/arm64/boot/dts/amlogic/tl1_t962x2_x301.dts
@@ -1691,7 +1691,8 @@
 			 "MMC_CAP_1_8V_DDR",
 			 "MMC_CAP_HW_RESET",
 			 "MMC_CAP_ERASE",
-			 "MMC_CAP_CMD23";
+			 "MMC_CAP_CMD23",
+			 "MMC_CAP_DRIVER_TYPE_D";
 		caps2 = "MMC_CAP2_HS200", "MMC_CAP2_HS400";
 		f_min = <400000>;
 		f_max = <198000000>;
diff --git a/drivers/amlogic/mmc/aml_sd_emmc_v3.c b/drivers/amlogic/mmc/aml_sd_emmc_v3.c
index 79f362a..08559f0 100644
--- a/drivers/amlogic/mmc/aml_sd_emmc_v3.c
+++ b/drivers/amlogic/mmc/aml_sd_emmc_v3.c
@@ -806,7 +806,7 @@ RETRY:
 		pdata->intf3 = intf3;
 		retry--;
 		if (retry == 0) {
-			pr_warn("[%s][%d] retry eyetest failed-line:%d\n",
+			pr_debug("[%s][%d] retry eyetest failed-line:%d\n",
 					__func__, __LINE__, line_x);
 			return 1;
 		}
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index ae8b397..fbac7f2 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -1184,7 +1184,7 @@ static int mmc_select_hs400(struct mmc_card *card)
 			pr_info("%s:use ds type0\n",
 				mmc_hostname(host));
 	/*3 -> type4 -> MMC_CAP_DRIVER_TYPED*/
-		} else if (ds & (1 << 3)) {
+		} else if (ds & (1 << 2)) {
 			raw_driver_strength &= ~(1 << 1);
 			pr_info("%s:use ds type4\n",
 				mmc_hostname(host));