From: Judith Mendez <jm@ti.com>
To: Tom Rini <trini@konsulko.com>, Peng Fan <peng.fan@nxp.com>,
Jaehoon Chung <jh80.chung@samsung.com>
Cc: Bryan Brattlof <bb@ti.com>, Vignesh Raghavendra <vigneshr@ti.com>,
<u-boot@lists.denx.de>
Subject: [PATCH 4/5] configs: am62px_evm_r5/a53_defconfig: Disable eMMC HS400
Date: Tue, 8 Apr 2025 12:05:26 -0500 [thread overview]
Message-ID: <20250408170527.2832563-5-jm@ti.com> (raw)
In-Reply-To: <20250408170527.2832563-1-jm@ti.com>
This patch addresses silicon errata i2458 [0] "MMCHS: eMMC HS400
tDCD timing marginal to JEDEC spec". Where, in some corner cases,
MMC0 interface may marginally exceed the tdCD JEDEC spec requirement
of 300 ps. As per workaround, switch to HS200 mode instead of HS400.
[0] https://www.ti.com/lit/er/sprz574a/sprz574a.pdf
Signed-off-by: Judith Mendez <jm@ti.com>
---
configs/am62px_evm_a53_defconfig | 4 ++--
configs/am62px_evm_r5_defconfig | 1 -
2 files changed, 2 insertions(+), 3 deletions(-)
diff --git a/configs/am62px_evm_a53_defconfig b/configs/am62px_evm_a53_defconfig
index 30b4a24ee9a..70dbb65d9f8 100644
--- a/configs/am62px_evm_a53_defconfig
+++ b/configs/am62px_evm_a53_defconfig
@@ -117,8 +117,8 @@ CONFIG_MMC_IO_VOLTAGE=y
CONFIG_SPL_MMC_IO_VOLTAGE=y
CONFIG_MMC_UHS_SUPPORT=y
CONFIG_SPL_MMC_UHS_SUPPORT=y
-CONFIG_MMC_HS400_SUPPORT=y
-CONFIG_SPL_MMC_HS400_SUPPORT=y
+CONFIG_MMC_HS200_SUPPORT=y
+CONFIG_SPL_MMC_HS200_SUPPORT=y
CONFIG_MMC_SDHCI=y
CONFIG_MMC_SDHCI_ADMA=y
CONFIG_SPL_MMC_SDHCI_ADMA=y
diff --git a/configs/am62px_evm_r5_defconfig b/configs/am62px_evm_r5_defconfig
index f39356351f4..1b4e0afbc07 100644
--- a/configs/am62px_evm_r5_defconfig
+++ b/configs/am62px_evm_r5_defconfig
@@ -89,7 +89,6 @@ CONFIG_SYS_I2C_OMAP24XX=y
CONFIG_DM_MAILBOX=y
CONFIG_K3_SEC_PROXY=y
CONFIG_ESM_K3=y
-CONFIG_MMC_HS400_SUPPORT=y
CONFIG_MMC_SDHCI=y
CONFIG_MMC_SDHCI_ADMA=y
CONFIG_SPL_MMC_SDHCI_ADMA=y
--
2.49.0
next prev parent reply other threads:[~2025-04-08 17:06 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-08 17:05 [PATCH 0/5] More MMC fixes Judith Mendez
2025-04-08 17:05 ` [PATCH 1/5] mmc: am654_sdhci: Add MMC_HS_52 to timing data Judith Mendez
2025-04-08 17:05 ` [PATCH 2/5] mmc: am654_sdhci: Fix HIGH_SPEED_ENA Judith Mendez
2025-04-08 17:05 ` [PATCH 3/5] mmc: am654_sdhci: Add am654_sdhci_set_control_reg Judith Mendez
2025-04-08 17:05 ` Judith Mendez [this message]
2025-04-08 17:05 ` [PATCH 5/5] configs: am62*_evm_a53_defconfig: Add TI_COMMON_CMD_OPTIONS Judith Mendez
2025-04-12 17:04 ` [PATCH 0/5] More MMC fixes Bryan Brattlof
2025-04-14 14:40 ` Judith Mendez
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