Tool/software:
I am running into the following error when booting on SD:
sdhci_transfer_data: Transfer data timeoutsdhci_send_command: Timeout for status update: 00000000 00000001sdhci_set_clock: Timeout to wait cmd & data inhibitsdhci_send_command: MMC: 1 busy timeout increasing to: 200 ms.sdhci_send_command: MMC: 1 busy timeout increasing to: 400 ms.sdhci_send_command: MMC: 1 busy timeout increasing to: 800 ms.sdhci_send_command: MMC: 1 busy timeout increasing to: 1600 ms.sdhci_send_command: MMC: 1 busy timeout increasing to: 3200 ms.sdhci_send_command: MMC: 1 busy timeout.sdhci_set_clock: Timeout to wait cmd & data inhibitsdhci_send_command: MMC: 1 busy timeout.sdhci_set_clock: Timeout to wait cmd & data inhibitunable to select a modespl: mmc init failed with error: -524SPL: failed to boot from all boot devices### ERROR ### Please RESET the board ###
This is running a AM62A7 on a custom motherboard. I have tried to disable the high speed SD card modes with the attached patchfile on the 10.00.00.08 SDK:
From 803ac2e728dbadf08e85b88224e2169ea4f84a65 Mon Sep 17 00:00:00 2001 From: Aaditya Watwe <aaditya.watwe@gmail.com> Date: Fri, 11 Oct 2024 10:22:31 -0700 Subject: Disable clocks faster than 25MHz for flash --- arch/arm/dts/k3-am62a-main.dtsi | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm/dts/k3-am62a-main.dtsi b/arch/arm/dts/k3-am62a-main.dtsi index e5adae8209..b08cc39e7a 100644 --- a/arch/arm/dts/k3-am62a-main.dtsi +++ b/arch/arm/dts/k3-am62a-main.dtsi @@ -588,7 +588,9 @@ ti,clkbuf-sel = <0x7>; ti,otap-del-sel-legacy = <0x0>; ti,otap-del-sel-mmc-hs = <0x0>; + /* Disable fast eMMC standards ti,otap-del-sel-hs200 = <0x6>; + */ status = "disabled"; }; @@ -605,9 +607,11 @@ ti,otap-del-sel-sd-hs = <0x0>; ti,otap-del-sel-sdr12 = <0xf>; ti,otap-del-sel-sdr25 = <0xf>; + /* Disable fast SD standards ti,otap-del-sel-sdr50 = <0xc>; ti,otap-del-sel-sdr104 = <0x6>; ti,otap-del-sel-ddr50 = <0x9>; + */ ti,itap-del-sel-legacy = <0x0>; ti,itap-del-sel-sd-hs = <0x0>; ti,itap-del-sel-sdr12 = <0x0>; @@ -628,9 +632,11 @@ ti,otap-del-sel-sd-hs = <0x0>; ti,otap-del-sel-sdr12 = <0xf>; ti,otap-del-sel-sdr25 = <0xf>; + /* Disable fast SD standards ti,otap-del-sel-sdr50 = <0xc>; ti,otap-del-sel-sdr104 = <0x6>; ti,otap-del-sel-ddr50 = <0x9>; + */ ti,itap-del-sel-legacy = <0x0>; ti,itap-del-sel-sd-hs = <0x0>; ti,itap-del-sel-sdr12 = <0x0>; -- 2.46.0
We have probed the clock signal between the AM62A SoC and the SD card, and observed that it runs at 25MHz and quickly stops (the clock flatlines on the oscilloscope).
Please advise as to how we can start debugging this issue.
