[PATCH AUTOSEL 5.11 13/52] mmc: sdhci-iproc: Add ACPI bindings for the RPi
From: Sasha Levin <sashal@kernel.org>
Date: 2021-03-02 12:42:45
Also in:
linux-arm-kernel, linux-mmc, lkml
Subsystem:
multimedia card (mmc), secure digital (sd) and sdio subsystem, secure digital host controller interface (sdhci) driver, the rest · Maintainers:
Ulf Hansson, Adrian Hunter, Linus Torvalds
From: Jeremy Linton <redacted> [ 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 <redacted> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Link: https://lore.kernel.org/r/20210120000406.1843400-2-jeremy.linton@arm.com (local) Signed-off-by: Ulf Hansson <redacted> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/mmc/host/sdhci-iproc.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)
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);
--
2.30.1