Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 54a849c6 authored by Deepak Katragadda's avatar Deepak Katragadda
Browse files

clk: qcom: CPU clock driver for SDM855 



Add the OSM clock driver to control CPU clock scaling on SDM855.

Change-Id: I30265195c647a942799c9d09da7670d9d555a6c0
Signed-off-by: default avatarDeepak Katragadda <dkatraga@codeaurora.org>
parent 3295850b

Documentation/devicetree/bindings/arm/msm/qcom,osm.txt

0 → 100644
+46 −0
Original line number Diff line number Diff line 
Qualcomm Technologies, Inc. OSM Bindings



Operating State Manager (OSM) is a hardware engine used by some Qualcomm

Technologies, Inc. (QTI) SoCs to manage frequency and voltage scaling

in hardware. OSM is capable of controlling frequency and voltage requests

for multiple clusters via the existence of multiple OSM domains.



Properties:

- compatible

	Usage:      required

	Value type: <string>

	Definition: must be "qcom,clk-cpu-osm".



- reg

	Usage:      required

	Value type: <prop-encoded-array>

	Definition: Addresses and sizes for the memory of the OSM controller.



- reg-names

	Usage:      required

	Value type: <stringlist>

	Definition: Address names. Must be "osm_l3_base", "osm_pwrcl_base",

		    "osm_perfcl_base", and "osm_perfpcl_base".

		    Must be specified in the same order as the corresponding

		    addresses are specified in the reg property.



- l3-devs

	Usage: optional

	Value type: <phandle>

	Definition: List of phandles to devices that the OPP tables with the L3

		    frequency and voltage mappings are loaded for.



Example:

	clock_cpucc: qcom,cpucc {

		compatible = "qcom,clk-cpu-osm";

		reg = <0x18321000 0x1400>,

			<0x18323000 0x1400>,

			<0x18325800 0x1400>,

			<0x18327800 0x1400>;

		reg-names = "osm_l3_base", "osm_pwrcl_base",

			"osm_perfcl_base", "osm_perfpcl_base";



		l3-devs = <&phandle0 &phandle1 &phandle2>;



		#clock-cells = <1>;

	};

drivers/clk/qcom/Kconfig

+12 −0
Original line number Diff line number Diff line
@@ -240,3 +240,15 @@ config MSM_CAMCC_SDM855 
	  SDM855 devices.

          Say Y if you want to support camera devices and functionality such as

	  capturing pictures.



config CLOCK_CPU_OSM

	tristate "OSM CPU Clock Controller"

	depends on COMMON_CLK_QCOM

	help

	 Support for the OSM clock controller.

	 Operating State Manager (OSM) is a hardware engine used by some

	 Qualcomm Technologies, Inc. (QTI) SoCs to manage frequency and

	 voltage scaling in hardware. OSM is capable of controlling

	 frequency and voltage requests for multiple clusters via the

	 existence of multiple OSM domains.

	 Say Y if you want to support OSM clocks.

drivers/clk/qcom/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -17,6 +17,7 @@ clk-qcom-$(CONFIG_QCOM_GDSC) += gdsc.o 
# Keep alphabetically sorted by config

obj-$(CONFIG_APQ_GCC_8084) += gcc-apq8084.o

obj-$(CONFIG_APQ_MMCC_8084) += mmcc-apq8084.o

obj-$(CONFIG_CLOCK_CPU_OSM) += clk-cpu-osm.o

obj-$(CONFIG_IPQ_GCC_4019) += gcc-ipq4019.o

obj-$(CONFIG_IPQ_GCC_806X) += gcc-ipq806x.o

obj-$(CONFIG_IPQ_GCC_8074) += gcc-ipq8074.o

drivers/clk/qcom/clk-cpu-osm.c

0 → 100644
+1033 −0

File added.

Preview size limit exceeded, changes collapsed.

include/dt-bindings/clock/qcom,cpucc-sdm855.h

+15 −13
Original line number Diff line number Diff line
@@ -16,16 +16,18 @@ 


#define L3_CLUSTER0_VOTE_CLK		0

#define L3_CLUSTER1_VOTE_CLK		1

#define L3_CLK							2

#define CPU0_PWRCL_CLK						3

#define CPU1_PWRCL_CLK						4

#define CPU2_PWRCL_CLK						5

#define CPU3_PWRCL_CLK						6

#define PWRCL_CLK						7

#define CPU4_PERFCL_CLK						8

#define CPU5_PERFCL_CLK						9

#define CPU6_PERFCL_CLK						10

#define CPU7_PERFCL_CLK						11

#define L3_MISC_VOTE_CLK		2

#define L3_CLK				3

#define CPU0_PWRCL_CLK			4

#define CPU1_PWRCL_CLK			5

#define CPU2_PWRCL_CLK			6

#define CPU3_PWRCL_CLK			7

#define PWRCL_CLK			8

#define CPU4_PERFCL_CLK			9

#define CPU5_PERFCL_CLK			10

#define CPU6_PERFCL_CLK			11

#define PERFCL_CLK			12

#define CPU7_PERFPCL_CLK		13

#define PERFPCL_CLK			14



#endif