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From patchwork Sun Jul 22 12:54:07 2018
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Sun, 22 Jul 2018 12:54:27 +0000 (UTC)
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From: Icenowy Zheng <icenowy@aosc.io>
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To: Ulf Hansson <ulf.hansson@linaro.org>,
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Maxime Ripard <maxime.ripard@bootlin.com>,
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Chen-Yu Tsai <wens@csie.org>
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Cc: linux-mmc@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
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linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com,
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Icenowy Zheng <icenowy@aosc.io>
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Subject: [PATCH] mmc: sunxi: allow 3.3V DDR when DDR is available
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Date: Sun, 22 Jul 2018 20:54:07 +0800
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Message-Id: <20180722125407.43107-1-icenowy@aosc.io>
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Sender: linux-mmc-owner@vger.kernel.org
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Precedence: bulk
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List-ID: <linux-mmc.vger.kernel.org>
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Some Allwinner boards feature an on-board eMMC with fixed 3.3V voltage
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(e.g. Banana Pi M2+), and in this case both the eMMC and the SoC are
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capable of doing 3.3V DDR transmission.
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Add capability of 3.3V DDR when DDR is available (extra clock or new
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timing).
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Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
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Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
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---
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drivers/mmc/host/sunxi-mmc.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c
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index 8e7f3e35ee3d..4ea8e2611079 100644
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--- a/drivers/mmc/host/sunxi-mmc.c
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+++ b/drivers/mmc/host/sunxi-mmc.c
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@@ -1388,7 +1388,7 @@ static int sunxi_mmc_probe(struct platform_device *pdev)
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MMC_CAP_ERASE | MMC_CAP_SDIO_IRQ;
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if (host->cfg->clk_delays || host->use_new_timings)
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- mmc->caps |= MMC_CAP_1_8V_DDR;
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+ mmc->caps |= MMC_CAP_1_8V_DDR | MMC_CAP_3_3V_DDR;
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ret = mmc_of_parse(mmc);
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if (ret)
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