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Message-Id: <20211222030634.33816-1-michael@allwinnertech.com>
Date: Wed, 22 Dec 2021 11:06:34 +0800
From: Michael Wu <michael@...winnertech.com>
To: ulf.hansson@...aro.org, mripard@...nel.org, wens@...e.org,
samuel@...lland.org, andre.przywara@....com
Cc: jernej.skrabec@...il.com, linux-mmc@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
linux-kernel@...r.kernel.org,
Michael Wu <michael@...winnertech.com>
Subject: [PATCH 1/3] mmc:sunxi-mmc:add support on discrete device power supply
Because some platform has no regulator, only use discrete devices
to supply power,For this situation, to use sd/mmc card, we add ocr manually
Signed-off-by: Michael Wu <michael@...winnertech.com>
---
drivers/mmc/host/sunxi-mmc.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c
index 2702736a1c57..afeefead6501 100644
--- a/drivers/mmc/host/sunxi-mmc.c
+++ b/drivers/mmc/host/sunxi-mmc.c
@@ -1300,6 +1300,14 @@ static int sunxi_mmc_resource_request(struct sunxi_mmc_host *host,
if (ret)
return ret;
+ /**
+ * Some platforms has no regulator. Discrete devices are used instead.
+ * To support sd/mmc card, we need to add ocr manually.
+ */
+ if (!host->mmc->ocr_avail)
+ host->mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
+
+
host->reg_base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(host->reg_base))
return PTR_ERR(host->reg_base);
--
2.29.0
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