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From: Ahmad Fatoum <a.fatoum@pengutronix.de>
To: barebox@lists.infradead.org
Cc: ukl@pengutronix.de, "Daniel Brát" <danek.brat@gmail.com>,
	ore@pengutronix.de, "Ahmad Fatoum" <a.fatoum@pengutronix.de>
Subject: [PATCH 08/15] mci: bcm2835: add bcm2711-emmc2 (Rpi4) support
Date: Thu,  5 May 2022 10:01:45 +0200	[thread overview]
Message-ID: <20220505080152.1068424-9-a.fatoum@pengutronix.de> (raw)
In-Reply-To: <20220505080152.1068424-1-a.fatoum@pengutronix.de>

From: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

While older Raspberry Pis didn't mind the POWER_CONTROL register being
0x00, the BCM2711 on the Raspberry Pi 4 does mind, so initialize it for
3.3V like we do in many other SDHCI drivers. With the compatible added,
this can access the SD-Card on the Raspberry Pi 4. Change tested on both
Raspberry Pi 3b and Raspberry Pi 4b.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
 drivers/mci/mci-bcm2835.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/mci/mci-bcm2835.c b/drivers/mci/mci-bcm2835.c
index 3380fa2afc18..f092156f9a83 100644
--- a/drivers/mci/mci-bcm2835.c
+++ b/drivers/mci/mci-bcm2835.c
@@ -324,7 +324,7 @@ static int bcm2835_mci_reset(struct mci_host *mci, struct device_d *mci_dev)
 
 	sdhci_write32(&host->sdhci,
 			SDHCI_HOST_CONTROL__POWER_CONTROL__BLOCK_GAP_CONTROL,
-			0x00);
+			(SDHCI_BUS_VOLTAGE_330 | SDHCI_BUS_POWER_EN) << 8);
 	sdhci_write32(&host->sdhci, SDHCI_ACMD12_ERR__HOST_CONTROL2,
 			0x00);
 	sdhci_write32(&host->sdhci,
@@ -423,6 +423,8 @@ static int bcm2835_mci_probe(struct device_d *hw_dev)
 static __maybe_unused struct of_device_id bcm2835_mci_compatible[] = {
 	{
 		.compatible = "brcm,bcm2835-sdhci",
+	}, {
+		.compatible = "brcm,bcm2711-emmc2",
 	}, {
 		/* sentinel */
 	}
-- 
2.30.2


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  parent reply	other threads:[~2022-05-05  8:04 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-05  8:01 [PATCH 00/15] ARM: rpi: add basic Raspberry Pi 4 support Ahmad Fatoum
2022-05-05  8:01 ` [PATCH 01/15] PBL: fdt: fix /memory parsing when #address-cells != #size-cells Ahmad Fatoum
2022-05-05  8:01 ` [PATCH 02/15] of: address: fix printing of OF node name in error message Ahmad Fatoum
2022-05-05  8:01 ` [PATCH 03/15] serial: ns16550: rpi: remove ungating now done by proper clk driver Ahmad Fatoum
2022-05-05  8:01 ` [PATCH 04/15] ARM: cpu: prevent recursive dependencies via CPU_SUPPORTS_64BIT_KERNEL Ahmad Fatoum
2022-05-05  8:01 ` [PATCH 05/15] ARM: rpi: add Raspberry Pi 3 64-bit build support Ahmad Fatoum
2022-05-05  8:01 ` [PATCH 06/15] ARM: rpi: rpi3: disallow MMU_EARLY && 64BIT Ahmad Fatoum
2022-05-05  8:01 ` [PATCH 07/15] clk: rpi: add Raspberry Pi 4 support Ahmad Fatoum
2022-05-05  8:01 ` Ahmad Fatoum [this message]
2022-05-05  8:01 ` [PATCH 09/15] serial: ns16550: rpi: skip baudrate changes for bcm2711 Ahmad Fatoum
2022-05-05  8:01 ` [PATCH 10/15] clocksource: bcm2835: bump below architeced timer for AArch64 Ahmad Fatoum
2022-05-05  8:01 ` [PATCH 11/15] ARM: rpi: add Raspberry Pi 4 support Ahmad Fatoum
2022-05-05  8:01 ` [PATCH 12/15] ARM: rpi: add debug_ll support for Raspberry Pi 4 Ahmad Fatoum
2022-05-05  8:01 ` [PATCH 13/15] ARM: rpi: add heuristic for skipping detection of SDIO card Ahmad Fatoum
2022-05-05  8:01 ` [PATCH 14/15] doc: bcm283x: add initial docs for Raspberry Pi 4 support Ahmad Fatoum
2022-05-05  8:01 ` [PATCH 15/15] doc: bcm283x: reference newer firmware Ahmad Fatoum
2022-05-06 12:47 ` [PATCH 00/15] ARM: rpi: add basic Raspberry Pi 4 support Ahmad Fatoum

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