linux-kernel - [v5 1/2] dt-bindings: clock: Introduce QCOM RPMh clock bindings

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Message-Id: <1525164093-16645-2-git-send-email-tdas@codeaurora.org>
Date:   Tue,  1 May 2018 14:11:32 +0530
From:   Taniya Das <tdas@...eaurora.org>
To:     Stephen Boyd <sboyd@...eaurora.org>,
        Michael Turquette <mturquette@...libre.com>
Cc:     Andy Gross <andy.gross@...aro.org>,
        David Brown <david.brown@...aro.org>,
        Rajendra Nayak <rnayak@...eaurora.org>,
        Odelu Kukatla <okukatla@...eaurora.org>,
        Amit Nischal <anischal@...eaurora.org>,
        linux-arm-msm@...r.kernel.org, linux-soc@...r.kernel.org,
        linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, Taniya Das <tdas@...eaurora.org>
Subject: [v5 1/2] dt-bindings: clock: Introduce QCOM RPMh clock bindings

Add RPMh clock device bindings for Qualcomm Technology Inc's SoCs. These
devices would be used for communicating resource state requests to control
the clocks managed by RPMh.

Signed-off-by: Amit Nischal <anischal@...eaurora.org>
Signed-off-by: Taniya Das <tdas@...eaurora.org>
Reviewed-by: Rob Herring <robh@...nel.org>
---
 .../devicetree/bindings/clock/qcom,rpmh-clk.txt    | 32 ++++++++++++++++++++++
 include/dt-bindings/clock/qcom,rpmh.h              | 24 ++++++++++++++++
 2 files changed, 56 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/qcom,rpmh-clk.txt
 create mode 100644 include/dt-bindings/clock/qcom,rpmh.h

diff --git a/Documentation/devicetree/bindings/clock/qcom,rpmh-clk.txt b/Documentation/devicetree/bindings/clock/qcom,rpmh-clk.txt
new file mode 100644
index 0000000..ecc1dbe
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/qcom,rpmh-clk.txt
@@ -0,0 +1,32 @@
+Qualcomm Technologies, Inc. RPMh Clocks
+-------------------------------------------------------
+
+Resource Power Manager Hardened (RPMh) manages shared resources on
+some Qualcomm Technologies Inc. SoCs. It accepts clock requests from
+other hardware subsystems via RSC to control clocks.
+
+Required properties :
+- compatible : shall contain "qcom,sdm845-rpmh-clk"
+
+- #clock-cells : must contain 1
+
+Optional properties :
+- assigned-clk-divs : property should contain a list of divs for each clock in
+			the clk-output-names property. In case divs are not
+			provided the clock rate would be same as parent rate.
+- clk-output-names :  a list of strings of clock output signal for the divs to
+			 be applied.
+
+Example :
+
+#include <dt-bindings/clock/qcom,rpmh.h>
+
+	&apps_rsc {
+		rpmhcc: clock-controller {
+			compatible = "qcom,sdm845-rpmh-clk";
+			#clock-cells = <1>;
+			assigned-clk-divs = <2 2 2>;
+			clk-output-names = "bi_tcxo", "lnbb_clk2",
+						"lnbb_clk3";
+		};
+	};
diff --git a/include/dt-bindings/clock/qcom,rpmh.h b/include/dt-bindings/clock/qcom,rpmh.h
new file mode 100644
index 0000000..36caab2
--- /dev/null
+++ b/include/dt-bindings/clock/qcom,rpmh.h
@@ -0,0 +1,24 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2018, The Linux Foundation. All rights reserved. */
+
+
+#ifndef _DT_BINDINGS_CLK_MSM_RPMH_H
+#define _DT_BINDINGS_CLK_MSM_RPMH_H
+
+/* RPMh controlled clocks */
+#define RPMH_CXO_CLK				0
+#define RPMH_CXO_CLK_A				1
+#define RPMH_LN_BB_CLK2				2
+#define RPMH_LN_BB_CLK2_A			3
+#define RPMH_LN_BB_CLK3				4
+#define RPMH_LN_BB_CLK3_A			5
+#define RPMH_RF_CLK1				6
+#define RPMH_RF_CLK1_A				7
+#define RPMH_RF_CLK2				8
+#define RPMH_RF_CLK2_A				9
+#define RPMH_RF_CLK3				10
+#define RPMH_RF_CLK3_A				11
+#define RPMH_RF_CLK4				12
+#define RPMH_RF_CLK4_A				13
+
+#endif
--
Qualcomm INDIA, on behalf of Qualcomm Innovation Center, Inc.is a member
of the Code Aurora Forum, hosted by the  Linux Foundation.