From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751501AbcHGBhf (ORCPT ); Sat, 6 Aug 2016 21:37:35 -0400 Received: from lucky1.263xmail.com ([211.157.147.134]:44329 "EHLO lucky1.263xmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751756AbcHGBhc (ORCPT ); Sat, 6 Aug 2016 21:37:32 -0400 X-263anti-spam: KSV:0; X-MAIL-GRAY: 1 X-MAIL-DELIVERY: 0 X-KSVirus-check: 0 X-ABS-CHECKED: 4 X-ADDR-CHECKED: 0 X-RL-SENDER: shawn.lin@rock-chips.com X-FST-TO: jh80.chung@samsung.com X-SENDER-IP: 58.22.7.114 X-LOGIN-NAME: shawn.lin@rock-chips.com X-UNIQUE-TAG: <8a90e766c5651117cc2145205a7b8f4d> X-ATTACHMENT-NUM: 0 X-DNS-TYPE: 0 From: Shawn Lin To: Jaehoon Chung , Ulf Hansson Cc: Rob Herring , linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, Heiko Stuebner , linux-rockchip@lists.infradead.org, devicetree@vger.kernel.org, Shawn Lin Subject: [PATCH v2 1/6] dt-bindings: rockchip-dw-mshc: add description of rockchip,power-invert Date: Sun, 7 Aug 2016 09:34:04 +0800 Message-Id: <1470533644-16357-1-git-send-email-shawn.lin@rock-chips.com> X-Mailer: git-send-email 1.8.0 In-Reply-To: <1470533618-16312-1-git-send-email-shawn.lin@rock-chips.com> References: <1470533618-16312-1-git-send-email-shawn.lin@rock-chips.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org rockchip,power-invert is used for rockchip to introduce the flag DW_MMC_CARD_PWR_INVERT from DT which should make the power control of dw_mmc more flexible according to different hw design. Signed-off-by: Shawn Lin --- Changes in v2: None Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.txt | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.txt b/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.txt index 07184e8..5640659 100644 --- a/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.txt +++ b/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.txt @@ -30,6 +30,12 @@ Optional Properties: probing, low speeds or in case where all phases work at tuning time. If not specified 0 deg will be used. +* rockchip,power-invert: Invert the power control of PWREN register. If adding + it, the card should be in power-on state when the power io outputs high level + voltage, and it should be in power-off state when outputing low level voltage. + otherwise the behaviour of power control should be the opposite way which is + the default policy of dw mshc. + Example: rkdwmmc0@12200000 { -- 2.3.7