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From:
Colin Didier <cdidier@cybione.org>
Subject:
Alder Lake eMMC needs the same 0V quirk as Jasper/Apollo/Gemini Lake
To:
tech@openbsd.org
Date:
Thu, 28 Mar 2024 16:10:57 +0100

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Thread
fixes accessing eMMC on MeLE Quieter 4C.

before:
sdhc0 at pci0 dev 26 function 0 "Intel ADL-N eMMC" rev 0x00: apic 2 int 16
sdhc0: SDHC 3.00, 200 MHz base clock
sdmmc0 at sdhc0: 8-bit, sd high-speed, mmc high-speed, ddr52, dma
sdmmc0: can't enable card

after:
sdhc0 at pci0 dev 26 function 0 "Intel ADL-N eMMC" rev 0x00: apic 2 int 16
sdhc0: SDHC 3.00, 200 MHz base clock
sdmmc0 at sdhc0: 8-bit, sd high-speed, mmc high-speed, ddr52, dma
scsibus1 at sdmmc0: 2 targets, initiator 0
sd0 at scsibus1 targ 1 lun 0: <SD/MMC, A3A562, 0000> removable
sd0: 118000MB, 512 bytes/sector, 241664000 sectors

Index: sys/dev/pci/sdhc_pci.c
===================================================================
RCS file: /cvs/src/sys/dev/pci/sdhc_pci.c,v
retrieving revision 1.24
diff -u -p -u -p -r1.24 sdhc_pci.c
--- sys/dev/pci/sdhc_pci.c	11 Mar 2022 18:00:51 -0000	1.24
+++ sys/dev/pci/sdhc_pci.c	28 Mar 2024 01:54:59 -0000
@@ -131,7 +131,8 @@ sdhc_pci_attach(struct device *parent, s
 	   (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_100SERIES_LP_EMMC ||
 	   PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_APOLLOLAKE_EMMC ||
 	   PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_GLK_EMMC ||
-	   PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_JSL_EMMC))
+	   PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_JSL_EMMC ||
+	   PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_ADL_N_EMMC))
 		sc->sc.sc_flags |= SDHC_F_NOPWR0;
 
 	/* Some RICOH controllers need to be bumped into the right mode. */