[v2,17/26] mmc: disable the mmc clock during power off

Message ID	1506004213-22620-18-git-send-email-jjhiblot@ti.com
State	New
Headers	show Delivered-To: patch@linaro.org Received-SPF: pass (google.com: best guess record for domain of u-boot-bounces@lists.denx.de designates 81.169.180.215 as permitted sender) client-ip=81.169.180.215; From: Jean-Jacques Hiblot <jjhiblot@ti.com> To: <jh80.chung@samsung.com>, <trini@konsulko.com>, <kishon@ti.com>, <sjg@chromium.org> Date: Thu, 21 Sep 2017 16:30:04 +0200 Message-ID: <1506004213-22620-18-git-send-email-jjhiblot@ti.com> In-Reply-To: <1506004213-22620-1-git-send-email-jjhiblot@ti.com> References: <1506004213-22620-1-git-send-email-jjhiblot@ti.com> MIME-Version: 1.0 Cc: u-boot@lists.denx.de Subject: [U-Boot] [PATCH v2 17/26] mmc: disable the mmc clock during power off Precedence: list Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" <u-boot-bounces@lists.denx.de>
Series	None \| expand [v2,12/26] mmc: make mmc_set_ios() return status [v2,13/26] mmc: Enable signal voltage to be selected from mmc core [v2,15/26] mmc: add power cyle support in mmc core [v2,16/26] mmc: add a new mmc parameter to disable mmc clock [v2,17/26] mmc: disable the mmc clock during power off [v2,18/26] mmc: Add a execute_tuning() callback to the mmc operations. [v2,19/26] mmc: add HS200 support in MMC core [v2,23/26] mmc: Retry some MMC cmds on failure [v2,26/26] dm: mmc: Add a library function to parse generic dt binding

Message ID

1506004213-22620-18-git-send-email-jjhiblot@ti.com

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New

Headers

Received-SPF: pass (google.com: best guess record for domain of
	u-boot-bounces@lists.denx.de designates 81.169.180.215 as
	permitted sender) client-ip=81.169.180.215; 
From: Jean-Jacques Hiblot <jjhiblot@ti.com>
To: <jh80.chung@samsung.com>, <trini@konsulko.com>, <kishon@ti.com>,
	<sjg@chromium.org>
Date: Thu, 21 Sep 2017 16:30:04 +0200
Message-ID: <1506004213-22620-18-git-send-email-jjhiblot@ti.com>
In-Reply-To: <1506004213-22620-1-git-send-email-jjhiblot@ti.com>
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Cc: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v2 17/26] mmc: disable the mmc clock during power
	off
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Series

None | expand

Commit Message

Jean-Jacques Hiblot Sept. 21, 2017, 2:30 p.m. UTC

From: Kishon Vijay Abraham I <kishon@ti.com>

There is no point in having the mmc clock enabled during
power off. Disable the mmc clock. This is similar to how it's
programmed in Linux Kernel.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Vignesh R <vigneshr@ti.com>
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
---
 drivers/mmc/mmc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 1c941a2..1f9730e 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -1971,6 +1971,7 @@  static int mmc_power_on(struct mmc *mmc)
 
 static int mmc_power_off(struct mmc *mmc)
 {
+	mmc_set_clock(mmc, 1, true);
 #if CONFIG_IS_ENABLED(DM_MMC) && CONFIG_IS_ENABLED(DM_REGULATOR)
 	if (mmc->vmmc_supply) {
 		int ret = regulator_set_enable(mmc->vmmc_supply, false);

[v2,17/26] mmc: disable the mmc clock during power off

Commit Message

Patch