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From: Sascha Hauer <s.hauer@pengutronix.de>
To: "open list:BAREBOX" <barebox@lists.infradead.org>
Subject: [PATCH v2 13/20] ARM: k3: limit eMMC frequency to 26MHz
Date: Wed, 12 Feb 2025 15:09:26 +0100	[thread overview]
Message-ID: <20250212-k3-emmc-v2-13-8dd1bb0ce60a@pengutronix.de> (raw)
In-Reply-To: <20250212-k3-emmc-v2-0-8dd1bb0ce60a@pengutronix.de>

The eMMCs on am625 currently only work reliably with 26MHz. Until this
issue is sorted out limit them to 26MHz on the affected boards
(beagleplay and am625-sk).

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 arch/arm/dts/k3-am625-beagleplay.dts | 4 ++++
 arch/arm/dts/k3-am625-sk.dts         | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/arch/arm/dts/k3-am625-beagleplay.dts b/arch/arm/dts/k3-am625-beagleplay.dts
index 60340ab8ca..73ac950414 100644
--- a/arch/arm/dts/k3-am625-beagleplay.dts
+++ b/arch/arm/dts/k3-am625-beagleplay.dts
@@ -29,3 +29,7 @@ AM62X_IOPAD(0x0224, PIN_INPUT, 0) /* (D22) MMC1_DAT3 */
 		AM62X_IOPAD(0x0240, PIN_INPUT, 0) /* (D17) MMC1_SDCD */
 	>;
 };
+
+&sdhci0 {
+	max-frequency = <26000000>;
+};
diff --git a/arch/arm/dts/k3-am625-sk.dts b/arch/arm/dts/k3-am625-sk.dts
index 1982c34388..56d5681519 100644
--- a/arch/arm/dts/k3-am625-sk.dts
+++ b/arch/arm/dts/k3-am625-sk.dts
@@ -7,3 +7,7 @@
  * DRAM size differs between board variants. Real size is read from DDRSS
  */
 /delete-node/ &{/memory@80000000};
+
+&sdhci0 {
+	max-frequency = <26000000>;
+};

-- 
2.39.5




  parent reply	other threads:[~2025-02-12 14:33 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-02-12 14:09 [PATCH v2 00/20] ARM: K3 updates Sascha Hauer
2025-02-12 14:09 ` [PATCH v2 01/20] ARM: k3: Add function to enable 32k crystal Sascha Hauer
2025-02-12 14:09 ` [PATCH v2 02/20] ARM: k3: add function to detect eMMC boot Sascha Hauer
2025-02-12 14:09 ` [PATCH v2 03/20] ARM: k3: do not mount /boot when booting from eMMC Sascha Hauer
2025-02-12 14:09 ` [PATCH v2 04/20] fip: drop typedefs Sascha Hauer
2025-02-12 14:09 ` [PATCH v2 05/20] fip: use linux list implementation Sascha Hauer
2025-02-12 14:09 ` [PATCH v2 06/20] fip: use uuid_equal() and uuid_is_null() Sascha Hauer
2025-02-12 14:09 ` [PATCH v2 07/20] fiptool: do not typedef structs Sascha Hauer
2025-02-12 14:09 ` [PATCH v2 08/20] fip: add fip_ prefix Sascha Hauer
2025-02-12 14:09 ` [PATCH v2 09/20] fip: add fip_image_open() Sascha Hauer
2025-02-12 14:09 ` [PATCH v2 10/20] ARM: k3: r5: add USB DFU and eMMC boot support Sascha Hauer
2025-02-12 14:09 ` [PATCH v2 11/20] ARM: am625-sk: enable 32k crystal Sascha Hauer
2025-02-12 14:09 ` [PATCH v2 12/20] mci: am654: parse generic mmc node properties Sascha Hauer
2025-02-12 14:09 ` Sascha Hauer [this message]
2025-02-12 14:09 ` [PATCH v2 14/20] ARM: k3: add eMMC barebox update handler Sascha Hauer
2025-02-12 14:09 ` [PATCH v2 15/20] ARM: am625-sk: put environment on eMMC when booting from it Sascha Hauer
2025-02-12 14:09 ` [PATCH v2 16/20] serial: omap: Use ttyS as Linux console name Sascha Hauer
2025-02-12 14:09 ` [PATCH v2 17/20] ARM: k3: remove beagleplay FIT image Sascha Hauer
2025-02-12 14:09 ` [PATCH v2 18/20] ARM: am625-sk: cleanup board entry Sascha Hauer
2025-02-12 14:09 ` [PATCH v2 19/20] ARM: beagleplay: " Sascha Hauer
2025-02-12 14:09 ` [PATCH v2 20/20] ARM: k3: Add k3-r5_defconfig Sascha Hauer
2025-02-17 11:14 ` [PATCH v2 00/20] ARM: K3 updates Sascha Hauer

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