clk: qcom: Add Global Clock controller (GCC) driver for SDM660

Add support for the global clock controller found on SDM660
based devices. This should allow most non-multimedia device
drivers to probe and control their clocks.
Based on CAF implementation.

Signed-off-by: Taniya Das <tdas@codeaurora.org>
[craig: rename parents to fit upstream, and other cleanups]
Signed-off-by: Craig Tatlor <ctatlor97@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
[sboyd@kernel.org: Rename gcc_660 to gcc_sdm660 and fix numbering of
defines to avoid duplicates]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

Documentation/devicetree/bindings/clock/qcom,gcc.txt

@@ -19,6 +19,8 @@ Required properties :
 			"qcom,gcc-msm8996"
 			"qcom,gcc-msm8998"
 			"qcom,gcc-mdm9615"
+			"qcom,gcc-sdm630"
+			"qcom,gcc-sdm660"
 			"qcom,gcc-sdm845"
 
 - reg : shall contain base register location and length

drivers/clk/qcom/Kconfig

@@ -235,6 +235,15 @@ config MSM_GCC_8998
 	  Say Y if you want to use peripheral devices such as UART, SPI,
 	  i2c, USB, UFS, SD/eMMC, PCIe, etc.
 
+config SDM_GCC_660
+	tristate "SDM660 Global Clock Controller"
+	select QCOM_GDSC
+	depends on COMMON_CLK_QCOM
+	help
+	  Support for the global clock controller on SDM660 devices.
+	  Say Y if you want to use peripheral devices such as UART, SPI,
+	  i2C, USB, UFS, SDDC, PCIe, etc.
+
 config SDM_GCC_845
 	tristate "SDM845 Global Clock Controller"
 	select QCOM_GDSC

drivers/clk/qcom/Makefile

@@ -40,6 +40,7 @@ obj-$(CONFIG_QCOM_CLK_RPM) += clk-rpm.o
 obj-$(CONFIG_QCOM_CLK_RPMH) += clk-rpmh.o
 obj-$(CONFIG_QCOM_CLK_SMD_RPM) += clk-smd-rpm.o
 obj-$(CONFIG_SDM_DISPCC_845) += dispcc-sdm845.o
+obj-$(CONFIG_SDM_GCC_660) += gcc-sdm660.o
 obj-$(CONFIG_SDM_GCC_845) += gcc-sdm845.o
 obj-$(CONFIG_SDM_VIDEOCC_845) += videocc-sdm845.o
 obj-$(CONFIG_SPMI_PMIC_CLKDIV) += clk-spmi-pmic-div.o