clk: qcom: Add MSM8976/56 Global Clock Controller (GCC) driver

Add support for the global clock controller found on MSM8956
and MSM8976 SoCs.
Since the multimedia clocks are actually in the GCC on these
SoCs, this will allow drivers to probe and control basically
all the required clocks.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
Co-developed-by: Marijn Suijten <marijn.suijten@somainline.org>
Signed-off-by: Marijn Suijten <marijn.suijten@somainline.org>
Co-developed-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211208091036.132334-3-marijn.suijten@somainline.org

drivers/clk/qcom/Kconfig

@@ -265,6 +265,14 @@ config MSM_MMCC_8974
 	  Say Y if you want to support multimedia devices such as display,
 	  graphics, video encode/decode, camera, etc.
 
+config MSM_GCC_8976
+	tristate "MSM8956/76 Global Clock Controller"
+	select QCOM_GDSC
+	help
+	  Support for the global clock controller on msm8956/76 devices.
+	  Say Y if you want to use peripheral devices such as UART, SPI,
+	  i2c, USB, SD/eMMC, SATA, PCIe, etc.
+
 config MSM_MMCC_8994
 	tristate "MSM8994 Multimedia Clock Controller"
 	select MSM_GCC_8994

drivers/clk/qcom/Makefile

@@ -36,6 +36,7 @@ obj-$(CONFIG_MSM_GCC_8939) += gcc-msm8939.o
 obj-$(CONFIG_MSM_GCC_8953) += gcc-msm8953.o
 obj-$(CONFIG_MSM_GCC_8960) += gcc-msm8960.o
 obj-$(CONFIG_MSM_GCC_8974) += gcc-msm8974.o
+obj-$(CONFIG_MSM_GCC_8976) += gcc-msm8976.o
 obj-$(CONFIG_MSM_GCC_8994) += gcc-msm8994.o
 obj-$(CONFIG_MSM_GCC_8996) += gcc-msm8996.o
 obj-$(CONFIG_MSM_LCC_8960) += lcc-msm8960.o