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authorStefan Agner <stefan@agner.ch>2018-11-05 14:03:37 +0100
committerStefan Agner <stefan.agner@toradex.com>2019-04-25 18:06:51 +0200
commit2e91fa428a1389b3c881745a5779132e38cfbbbb (patch)
treeb265ff078dd0daa01d05a2f0be6cc73b1db32438 /scripts/gdb/linux/tasks.py
parent2f7ae068b5c36dbe57071ea1aabeea4f15fd9dd4 (diff)
ARM: dts: imx7-colibri: use HS200 instead of HS400
Several modules have issues with HS400 at 100MHz at room temperature but they seem to work fine at HS200 at 200MHz. Do not restrict frequency but use HS200 instead. Force HS200 by masking bit 63 of the SDHCI capability register. The i.MX ESDHC driver uses SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400. With that the stack checks bit 63 to descide whether HS400 is available. Using sdhci-caps-mask allows to mask bit 63. The stack then selects HS200 as operating mode. This prevents rare communication errors with minimal effect on performance: sdhci-esdhc-imx 30b60000.usdhc: warning! HS400 strobe DLL status REF not lock! Signed-off-by: Stefan Agner <stefan@agner.ch>
Diffstat (limited to 'scripts/gdb/linux/tasks.py')
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