From: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>
To: adrian.hunter@intel.com, ulf.hansson@linaro.org, robh+dt@kernel.org
Cc: asutoshd@codeaurora.org, riteshh@codeaurora.org,
stummala@codeaurora.org, sayalil@codeaurora.org,
evgreen@chromium.org, dianders@google.com,
Veerabhadrarao Badiganti <vbadigan@codeaurora.org>,
Mark Rutland <mark.rutland@arm.com>,
linux-mmc@vger.kernel.org (open list:MULTIMEDIA CARD (MMC),
SECURE DIGITAL (SD) AND...),
devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND
FLATTENED DEVICE TREE BINDINGS),
linux-kernel@vger.kernel.org (open list)
Subject: [PATCH 1/2] dt-bindings: mmc: sdhci-msm: Add flag for restoring dll
Date: Tue, 25 Sep 2018 20:34:34 +0530 [thread overview]
Message-ID: <1537887875-29494-2-git-send-email-vbadigan@codeaurora.org> (raw)
In-Reply-To: <1537887875-29494-1-git-send-email-vbadigan@codeaurora.org>
The dll settings of SDHC controller needs to be restored whenever
controller clocks are gated. This restoration is needed only on
few SDHCI-MSM controllers. This dt flag indicates whether dll
restoration is needed or not.
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>
---
Documentation/devicetree/bindings/mmc/sdhci-msm.txt | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/Documentation/devicetree/bindings/mmc/sdhci-msm.txt b/Documentation/devicetree/bindings/mmc/sdhci-msm.txt
index 3720385..207ce36 100644
--- a/Documentation/devicetree/bindings/mmc/sdhci-msm.txt
+++ b/Documentation/devicetree/bindings/mmc/sdhci-msm.txt
@@ -31,6 +31,8 @@ Optional properties:
BUS_OFF states in power irq. Should be specified in
pairs (lpm, hpm), for BUS_OFF and BUS_ON respectively.
Units uA.
+- qcom,restore-dll-config - Flag indicates that restoration of dll config after clock gating
+ is needed on given platform. This wouldn't be needed for every MSM.
Example:
sdhc_1: sdhci@f9824900 {
@@ -49,6 +51,8 @@ Example:
clocks = <&gcc GCC_SDCC1_APPS_CLK>, <&gcc GCC_SDCC1_AHB_CLK>;
clock-names = "core", "iface";
+
+ qcom,restore-dll-config;
};
sdhc_2: sdhci@f98a4900 {
--
Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project
next parent reply other threads:[~2018-09-25 15:05 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1537887875-29494-1-git-send-email-vbadigan@codeaurora.org>
2018-09-25 15:04 ` Veerabhadrarao Badiganti [this message]
2018-09-25 17:38 ` [PATCH 1/2] dt-bindings: mmc: sdhci-msm: Add flag for restoring dll Evan Green
2018-09-27 11:20 ` Veerabhadrarao Badiganti
2018-09-25 15:04 ` [PATCH 2/2] mmc: sdhci-msm: Re-initialize DLL if MCLK is gated dynamically Veerabhadrarao Badiganti
2018-09-25 22:28 ` Doug Anderson
2018-09-27 10:59 ` Veerabhadrarao Badiganti
2018-09-27 15:21 ` Doug Anderson
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