linux-kernel - [PATCH] UHS-SD card for Hisilicon Hikey

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Date:	Wed, 3 Aug 2016 18:22:13 +0800
From:	Jin Guojun <kid.jin@...ilicon.com>
To:	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <kid.jin@...ilicon.com>,
	<ulf.hansson@...aro.org>, <adrian.hunter@...el.com>,
	<jh80.chung@...sung.com>, <wsa+renesas@...g-engineering.com>,
	<arnd@...db.de>, <rmk+kernel@....linux.org.uk>,
	<shawn.lin@...k-chips.com>
CC:	<guodong.xu@...aro.org>, <kongfei@...ilicon.com>,
	<suzhuangluan@...ilicon.com>
Subject: [PATCH] UHS-SD card for Hisilicon Hikey

mmc: dw_mmc-k3: Hisilicon Hikey have no tuning function in dw_mmc-k3.c,so we must do the tuning function stub when we init UHS card.

Signed-off-by: Jin Guojun <kid.jin@...ilicon.com>
---
 drivers/mmc/host/dw_mmc-k3.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/mmc/host/dw_mmc-k3.c b/drivers/mmc/host/dw_mmc-k3.c
index 8e9d886..6247894 100644
--- a/drivers/mmc/host/dw_mmc-k3.c
+++ b/drivers/mmc/host/dw_mmc-k3.c
@@ -131,11 +131,17 @@ static void dw_mci_hi6220_set_ios(struct dw_mci *host, struct mmc_ios *ios)
 	host->bus_hz = clk_get_rate(host->biu_clk);
 }
 
+static int dw_mci_hi6220_execute_tuning(struct dw_mci_slot *slot, u32 opcode)
+{
+	return 0;
+}
+
 static const struct dw_mci_drv_data hi6220_data = {
 	.caps			= dw_mci_hi6220_caps,
 	.switch_voltage		= dw_mci_hi6220_switch_voltage,
 	.set_ios		= dw_mci_hi6220_set_ios,
 	.parse_dt		= dw_mci_hi6220_parse_dt,
+	.execute_tuning		= dw_mci_hi6220_execute_tuning,
 };
 
 static const struct of_device_id dw_mci_k3_match[] = {
-- 
1.9.1