This is a note to let you know that I've just added the patch titled
mmc: sdhci-iproc: Add ACPI bindings for the RPi
to the 5.11-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mmc-sdhci-iproc-add-acpi-bindings-for-the-rpi.patch
and it can be found in the queue-5.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 732a404e142e6dcec12ac94e35c396fbf6ce7896
Author: Jeremy Linton <jeremy.linton@xxxxxxx>
Date: Tue Jan 19 18:04:06 2021 -0600
mmc: sdhci-iproc: Add ACPI bindings for the RPi
[ Upstream commit 4f9833d3ec8da34861cd0680b00c73e653877eb9 ]
The RPi4 has an Arasan controller it carries over from the RPi3 and a newer
eMMC2 controller. Because of a couple of quirks, it seems wiser to bind
these controllers to the same driver that DT is using on this platform
rather than the generic sdhci_acpi driver with PNP0D40.
So, BCM2847 describes the older Arasan and BRCME88C describes the newer
eMMC2. The older Arasan is reusing an existing ACPI _HID used by other OSes
booting these tables on the RPi.
With this change, Linux is capable of utilizing the SD card slot, and the
Wi-Fi when booted with UEFI+ACPI on the RPi4.
Signed-off-by: Jeremy Linton <jeremy.linton@xxxxxxx>
Acked-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
Link: https://lore.kernel.org/r/20210120000406.1843400-2-jeremy.linton@xxxxxxx
Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/mmc/host/sdhci-iproc.c b/drivers/mmc/host/sdhci-iproc.c
index c9434b461aab..ddeaf8e1f72f 100644
--- a/drivers/mmc/host/sdhci-iproc.c
+++ b/drivers/mmc/host/sdhci-iproc.c
@@ -296,9 +296,27 @@ static const struct of_device_id sdhci_iproc_of_match[] = {
MODULE_DEVICE_TABLE(of, sdhci_iproc_of_match);
#ifdef CONFIG_ACPI
+/*
+ * This is a duplicate of bcm2835_(pltfrm_)data without caps quirks
+ * which are provided by the ACPI table.
+ */
+static const struct sdhci_pltfm_data sdhci_bcm_arasan_data = {
+ .quirks = SDHCI_QUIRK_BROKEN_CARD_DETECTION |
+ SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK |
+ SDHCI_QUIRK_NO_HISPD_BIT,
+ .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
+ .ops = &sdhci_iproc_32only_ops,
+};
+
+static const struct sdhci_iproc_data bcm_arasan_data = {
+ .pdata = &sdhci_bcm_arasan_data,
+};
+
static const struct acpi_device_id sdhci_iproc_acpi_ids[] = {
{ .id = "BRCM5871", .driver_data = (kernel_ulong_t)&iproc_cygnus_data },
{ .id = "BRCM5872", .driver_data = (kernel_ulong_t)&iproc_data },
+ { .id = "BCM2847", .driver_data = (kernel_ulong_t)&bcm_arasan_data },
+ { .id = "BRCME88C", .driver_data = (kernel_ulong_t)&bcm2711_data },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(acpi, sdhci_iproc_acpi_ids);
