Commit 00f64b58 authored by Georgi Djakov's avatar Georgi Djakov Committed by Stephen Boyd

clk: qcom: Add support for SMD-RPM Clocks

This adds initial support for clocks controlled by the Resource
Power Manager (RPM) processor on some Qualcomm SoCs, which use
the qcom_smd_rpm driver to communicate with RPM.
Such platforms are msm8916, apq8084 and msm8974.

The RPM is a dedicated hardware engine for managing the shared
SoC resources in order to keep the lowest power profile. It
communicates with other hardware subsystems via shared memory
and accepts clock requests, aggregates the requests and turns
the clocks on/off or scales them on demand.

This driver is based on the codeaurora.org driver:
https://www.codeaurora.org/cgit/quic/la/kernel/msm-3.10/tree/drivers/clk/qcom/clock-rpm.cSigned-off-by: default avatarGeorgi Djakov <georgi.djakov@linaro.org>
Acked-by: default avatarRob Herring <robh@kernel.org>
[sboyd@codeaurora.org: Remove useless braces for single line if]
Signed-off-by: default avatarStephen Boyd <sboyd@codeaurora.org>
parent 54823af9
Qualcomm RPM Clock Controller Binding
------------------------------------------------
The RPM is a dedicated hardware engine for managing the shared
SoC resources in order to keep the lowest power profile. It
communicates with other hardware subsystems via shared memory
and accepts clock requests, aggregates the requests and turns
the clocks on/off or scales them on demand.
Required properties :
- compatible : shall contain only one of the following. The generic
compatible "qcom,rpmcc" should be also included.
"qcom,rpmcc-msm8916", "qcom,rpmcc"
- #clock-cells : shall contain 1
Example:
smd {
compatible = "qcom,smd";
rpm {
interrupts = <0 168 1>;
qcom,ipc = <&apcs 8 0>;
qcom,smd-edge = <15>;
rpm_requests {
compatible = "qcom,rpm-msm8916";
qcom,smd-channels = "rpm_requests";
rpmcc: clock-controller {
compatible = "qcom,rpmcc-msm8916", "qcom,rpmcc";
#clock-cells = <1>;
};
};
};
};
...@@ -2,6 +2,9 @@ config QCOM_GDSC ...@@ -2,6 +2,9 @@ config QCOM_GDSC
bool bool
select PM_GENERIC_DOMAINS if PM select PM_GENERIC_DOMAINS if PM
config QCOM_RPMCC
bool
config COMMON_CLK_QCOM config COMMON_CLK_QCOM
tristate "Support for Qualcomm's clock controllers" tristate "Support for Qualcomm's clock controllers"
depends on OF depends on OF
...@@ -9,6 +12,19 @@ config COMMON_CLK_QCOM ...@@ -9,6 +12,19 @@ config COMMON_CLK_QCOM
select REGMAP_MMIO select REGMAP_MMIO
select RESET_CONTROLLER select RESET_CONTROLLER
config QCOM_CLK_SMD_RPM
tristate "RPM over SMD based Clock Controller"
depends on COMMON_CLK_QCOM && QCOM_SMD_RPM
select QCOM_RPMCC
help
The RPM (Resource Power Manager) is a dedicated hardware engine for
managing the shared SoC resources in order to keep the lowest power
profile. It communicates with other hardware subsystems via shared
memory and accepts clock requests, aggregates the requests and turns
the clocks on/off or scales them on demand.
Say Y if you want to support the clocks exposed by the RPM on
platforms such as apq8016, apq8084, msm8974 etc.
config APQ_GCC_8084 config APQ_GCC_8084
tristate "APQ8084 Global Clock Controller" tristate "APQ8084 Global Clock Controller"
select QCOM_GDSC select QCOM_GDSC
......
...@@ -29,3 +29,4 @@ obj-$(CONFIG_MSM_LCC_8960) += lcc-msm8960.o ...@@ -29,3 +29,4 @@ obj-$(CONFIG_MSM_LCC_8960) += lcc-msm8960.o
obj-$(CONFIG_MSM_MMCC_8960) += mmcc-msm8960.o obj-$(CONFIG_MSM_MMCC_8960) += mmcc-msm8960.o
obj-$(CONFIG_MSM_MMCC_8974) += mmcc-msm8974.o obj-$(CONFIG_MSM_MMCC_8974) += mmcc-msm8974.o
obj-$(CONFIG_MSM_MMCC_8996) += mmcc-msm8996.o obj-$(CONFIG_MSM_MMCC_8996) += mmcc-msm8996.o
obj-$(CONFIG_QCOM_CLK_SMD_RPM) += clk-smd-rpm.o
This diff is collapsed.
/*
* Copyright 2015 Linaro Limited
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef _DT_BINDINGS_CLK_MSM_RPMCC_H
#define _DT_BINDINGS_CLK_MSM_RPMCC_H
/* msm8916 */
#define RPM_SMD_XO_CLK_SRC 0
#define RPM_SMD_XO_A_CLK_SRC 1
#define RPM_SMD_PCNOC_CLK 2
#define RPM_SMD_PCNOC_A_CLK 3
#define RPM_SMD_SNOC_CLK 4
#define RPM_SMD_SNOC_A_CLK 5
#define RPM_SMD_BIMC_CLK 6
#define RPM_SMD_BIMC_A_CLK 7
#define RPM_SMD_QDSS_CLK 8
#define RPM_SMD_QDSS_A_CLK 9
#define RPM_SMD_BB_CLK1 10
#define RPM_SMD_BB_CLK1_A 11
#define RPM_SMD_BB_CLK2 12
#define RPM_SMD_BB_CLK2_A 13
#define RPM_SMD_RF_CLK1 14
#define RPM_SMD_RF_CLK1_A 15
#define RPM_SMD_RF_CLK2 16
#define RPM_SMD_RF_CLK2_A 17
#define RPM_SMD_BB_CLK1_PIN 18
#define RPM_SMD_BB_CLK1_A_PIN 19
#define RPM_SMD_BB_CLK2_PIN 20
#define RPM_SMD_BB_CLK2_A_PIN 21
#define RPM_SMD_RF_CLK1_PIN 22
#define RPM_SMD_RF_CLK1_A_PIN 23
#define RPM_SMD_RF_CLK2_PIN 24
#define RPM_SMD_RF_CLK2_A_PIN 25
#endif
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