clk: vc5: Add support for IDT VersaClock 5P49V5923 and 5P49V5933 (3e1aec4e) · Commits · 戴 / test

Add driver for IDT VersaClock 5 5P49V5923 and 5P49V5933 chips. These chips have two clock inputs, XTAL or CLK, which are muxed into single PLL/VCO input. In case of 5P49V5923, the XTAL in built into the chip while the 5P49V5923 requires external XTAL. The PLL feeds two fractional dividers. Each fractional divider feeds output mux, which allows selecting between clock from the fractional divider itself or from output mux on output N-1. In case of output mux 0, the output N-1 is instead connected to the output from the mux feeding the PLL. The driver thus far supports only the 5P49V5923 and 5P49V5933, while it should be easily extensible to the whole 5P49V59xx family of chips as they are all pretty similar. Signed-off-by:

Marek Vasut <marek.vasut@gmail.com> Cc: Michael Turquette <mturquette@baylibre.com> Reviewed-by:

Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Tested-by:

Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: linux-renesas-soc@vger.kernel.org Signed-off-by:

Stephen Boyd <sboyd@codeaurora.org>

MAINTAINERS

+5 −0

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		@@ -6185,6 +6185,11 @@ S: Maintained
		F: drivers/mfd/lpc_ich.c
		F: drivers/gpio/gpio-ich.c

		IDT VersaClock 5 CLOCK DRIVER
		M: Marek Vasut <marek.vasut@gmail.com>
		S: Maintained
		F: drivers/clk/clk-versaclock5.c

		IDE SUBSYSTEM
		M: "David S. Miller" <davem@davemloft.net>
		L: linux-ide@vger.kernel.org

drivers/clk/Kconfig

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		@@ -199,6 +199,16 @@ config COMMON_CLK_OXNAS
		---help---
		Support for the OXNAS SoC Family clocks.

		config COMMON_CLK_VC5
		tristate "Clock driver for IDT VersaClock5 devices"
		depends on I2C
		depends on OF
		select REGMAP_I2C
		help
		---help---
		This driver supports the IDT VersaClock5 programmable clock
		generator.

		source "drivers/clk/bcm/Kconfig"
		source "drivers/clk/hisilicon/Kconfig"
		source "drivers/clk/mediatek/Kconfig"

drivers/clk/Makefile

+1 −0

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		@@ -46,6 +46,7 @@ obj-$(CONFIG_ARCH_TANGO) += clk-tango4.o
		obj-$(CONFIG_CLK_TWL6040) += clk-twl6040.o
		obj-$(CONFIG_ARCH_U300) += clk-u300.o
		obj-$(CONFIG_ARCH_VT8500) += clk-vt8500.o
		obj-$(CONFIG_COMMON_CLK_VC5) += clk-versaclock5.o
		obj-$(CONFIG_COMMON_CLK_WM831X) += clk-wm831x.o
		obj-$(CONFIG_COMMON_CLK_XGENE) += clk-xgene.o

drivers/clk/clk-versaclock5.c

0 → 100644

+791 −0

File added.

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