clk: remove unused device drivers

deleted file mode 100644
index 19c580a7bda2..000000000000
@@ -1,23 +0,0 @@
-* Sigma Designs Tango4 Clock Generator
-
-The Tango4 clock generator outputs cpu_clk and sys_clk (the latter is used
-for RAM and various peripheral devices). The clock binding described here
-is applicable to all Tango4 SoCs.
-
-Required Properties:
-
-- compatible: should be "sigma,tango4-clkgen".
-- reg: physical base address of the device and length of memory mapped region.
-- clocks: phandle of the input clock (crystal oscillator).
-- clock-output-names: should be "cpuclk" and "sysclk".
-- #clock-cells: should be set to 1.
-
-Example:
-
-	clkgen: clkgen@10000 {
-		compatible = "sigma,tango4-clkgen";
-		reg = <0x10000 0x40>;
-		clocks = <&xtal>;
-		clock-output-names = "cpuclk", "sysclk";
-		#clock-cells = <1>;
-	};

index dbdc590e7de3..adf05704336e 100644
@@ -63,7 +63,6 @@ obj-$(CONFIG_COMMON_CLK_SI570)		+= clk-si570.o
 obj-$(CONFIG_COMMON_CLK_STM32F)		+= clk-stm32f4.o
 obj-$(CONFIG_COMMON_CLK_STM32H7)	+= clk-stm32h7.o
 obj-$(CONFIG_COMMON_CLK_STM32MP157)	+= clk-stm32mp1.o
-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

deleted file mode 100644
index 5c91c9e4f1be..000000000000
@@ -1,34 +0,0 @@
-Device Tree Clock bindings for ZTE zx296702
-
-This binding uses the common clock binding[1].
-
-[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
-
-Required properties:
-- compatible : shall be one of the following:
-	"zte,zx296702-topcrm-clk":
-		zx296702 top clock selection, divider and gating
-
-	"zte,zx296702-lsp0crpm-clk" and
-	"zte,zx296702-lsp1crpm-clk":
-		zx296702 device level clock selection and gating
-
-- reg: Address and length of the register set
-
-The clock consumer should specify the desired clock by having the clock
-ID in its "clocks" phandle cell. See include/dt-bindings/clock/zx296702-clock.h
-for the full list of zx296702 clock IDs.
-
-
-topclk: topcrm@09800000 {
-        compatible = "zte,zx296702-topcrm-clk";
-        reg = <0x09800000 0x1000>;
-        #clock-cells = <1>;
-};
-
-uart0: serial@09405000 {
-        compatible = "zte,zx296702-uart";
-        reg = <0x09405000 0x1000>;
-        interrupts = <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>;
-        clocks = <&lsp1clk ZX296702_UART0_PCLK>;
-};

deleted file mode 100644
index 3a46bf0b2540..000000000000
@@ -1,37 +0,0 @@
-Device Tree Clock bindings for ZTE zx296718
-
-This binding uses the common clock binding[1].
-
-[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
-
-Required properties:
-- compatible : shall be one of the following:
-	"zte,zx296718-topcrm":
-		zx296718 top clock selection, divider and gating
-
-	"zte,zx296718-lsp0crm" and
-	"zte,zx296718-lsp1crm":
-		zx296718 device level clock selection and gating
-
-	"zte,zx296718-audiocrm":
-		zx296718 audio clock selection, divider and gating
-
-- reg: Address and length of the register set
-
-The clock consumer should specify the desired clock by having the clock
-ID in its "clocks" phandle cell. See include/dt-bindings/clock/zx296718-clock.h
-for the full list of zx296718 clock IDs.
-
-
-topclk: topcrm@1461000 {
-        compatible = "zte,zx296718-topcrm-clk";
-        reg = <0x01461000 0x1000>;
-        #clock-cells = <1>;
-};
-
-usbphy0:usb-phy0 {
-	compatible = "zte,zx296718-usb-phy";
-	#phy-cells = <0>;
-	clocks = <&topclk USB20_PHY_CLK>;
-	clock-names = "phyclk";
-};

index adf05704336e..c1f0e4823868 100644
@@ -121,6 +121,5 @@ obj-y					+= versatile/
 ifeq ($(CONFIG_COMMON_CLK), y)
 obj-$(CONFIG_X86)			+= x86/
 endif
-obj-$(CONFIG_ARCH_ZX)			+= zte/
 obj-$(CONFIG_ARCH_ZYNQ)			+= zynq/
 obj-$(CONFIG_COMMON_CLK_ZYNQMP)         += zynqmp/

deleted file mode 100644
index f130643b695d..000000000000
@@ -1,4 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-obj-y := clk.o
-obj-$(CONFIG_SOC_ZX296702) += clk-zx296702.o
-obj-$(CONFIG_ARCH_ZX) += clk-zx296718.o

deleted file mode 100644
index 7cafcb98ead7..000000000000
@@ -1,80 +0,0 @@
-Clock bindings for ST-Ericsson U300 System Controller Clocks
-
-Bindings for the gated system controller clocks:
-
-Required properties:
-- compatible: must be "stericsson,u300-syscon-clk"
-- #clock-cells: must be <0>
-- clock-type: specifies the type of clock:
-  0 = slow clock
-  1 = fast clock
-  2 = rest/remaining clock
-- clock-id: specifies the clock in the type range
-
-Optional properties:
-- clocks: parent clock(s)
-
-The available clocks per type are as follows:
-
-Type:  ID:   Clock:
--------------------
-0      0     Slow peripheral bridge clock
-0      1     UART0 clock
-0      4     GPIO clock
-0      6     RTC clock
-0      7     Application timer clock
-0      8     Access timer clock
-
-1      0     Fast peripheral bridge clock
-1      1     I2C bus 0 clock
-1      2     I2C bus 1 clock
-1      5     MMC interface peripheral (silicon) clock
-1      6     SPI clock
-
-2      3     CPU clock
-2      4     DMA controller clock
-2      5     External Memory Interface (EMIF) clock
-2      6     NAND flask interface clock
-2      8     XGAM graphics engine clock
-2      9     Shared External Memory Interface (SEMI) clock
-2      10    AHB Subsystem Bridge clock
-2      12    Interrupt controller clock
-
-Example:
-
-gpio_clk: gpio_clk@13M {
-	#clock-cells = <0>;
-	compatible = "stericsson,u300-syscon-clk";
-	clock-type = <0>; /* Slow */
-	clock-id = <4>;
-	clocks = <&slow_clk>;
-};
-
-gpio: gpio@c0016000 {
-	compatible = "stericsson,gpio-coh901";
-	(...)
-	clocks = <&gpio_clk>;
-};
-
-
-Bindings for the MMC/SD card clock:
-
-Required properties:
-- compatible: must be "stericsson,u300-syscon-mclk"
-- #clock-cells: must be <0>
-
-Optional properties:
-- clocks: parent clock(s)
-
-mmc_mclk: mmc_mclk {
-	#clock-cells = <0>;
-	compatible = "stericsson,u300-syscon-mclk";
-	clocks = <&mmc_pclk>;
-};
-
-mmcsd: mmcsd@c0001000 {
-	compatible = "arm,pl18x", "arm,primecell";
-	clocks = <&mmc_pclk>, <&mmc_mclk>;
-	clock-names = "apb_pclk", "mclk";
-	(...)
-};

index 2df2d3080faf..f8d41e430b5c 100644
@@ -64,7 +64,6 @@ obj-$(CONFIG_COMMON_CLK_STM32F)		+= clk-stm32f4.o
 obj-$(CONFIG_COMMON_CLK_STM32H7)	+= clk-stm32h7.o
 obj-$(CONFIG_COMMON_CLK_STM32MP157)	+= clk-stm32mp1.o
 obj-$(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