ARM: u300: move the gated system controller clocks to DT

This moves the slow, fast, AHB bridge and "rest" clocks on
the U300 system controller over to registration from the
device tree.

Acked-by: Mike Turquette <[e-mail]>
Signed-off-by: Linus Walleij <[e-mail]>

Documentation/devicetree/bindings/clock/ste-u300-syscon-clock.txt

···
+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>;
+};

arch/arm/boot/dts/ste-u300.dts

···
 			compatible = "fixed-clock";
 			clock-frequency = <13000000>;
 		};
+		/* Slow bridge clocks under PLL13 */
+		slow_clk: slow_clk@13M {
+			#clock-cells = <0>;
+			compatible = "stericsson,u300-syscon-clk";
+			clock-type = <0>; /* Slow */
+			clock-id = <0>;
+			clocks = <&pll13>;
+		};
+		uart0_clk: uart0_clk@13M {
+			#clock-cells = <0>;
+			compatible = "stericsson,u300-syscon-clk";
+			clock-type = <0>; /* Slow */
+			clock-id = <1>;
+			clocks = <&slow_clk>;
+		};
+		gpio_clk: gpio_clk@13M {
+			#clock-cells = <0>;
+			compatible = "stericsson,u300-syscon-clk";
+			clock-type = <0>; /* Slow */
+			clock-id = <4>;
+			clocks = <&slow_clk>;
+		};
+		rtc_clk: rtc_clk@13M {
+			#clock-cells = <0>;
+			compatible = "stericsson,u300-syscon-clk";
+			clock-type = <0>; /* Slow */
+			clock-id = <6>;
+			clocks = <&slow_clk>;
+		};
+		apptimer_clk: app_tmr_clk@13M {
+			#clock-cells = <0>;
+			compatible = "stericsson,u300-syscon-clk";
+			clock-type = <0>; /* Slow */
+			clock-id = <7>;
+			clocks = <&slow_clk>;
+		};
+		acc_tmr_clk@13M {
+			#clock-cells = <0>;
+			compatible = "stericsson,u300-syscon-clk";
+			clock-type = <0>; /* Slow */
+			clock-id = <8>;
+			clocks = <&slow_clk>;
+		};
 		pll208: pll208@208M {
 			#clock-cells = <0>;
 			compatible = "fixed-clock";
···
 			clock-mult = <1>;
 			clocks = <&pll208>;
 		};
+		cpu_clk@208M {
+			#clock-cells = <0>;
+			compatible = "stericsson,u300-syscon-clk";
+			clock-type = <2>; /* Rest */
+			clock-id = <3>;
+			clocks = <&app208>;
+		};
 		app104: app_104_clk@104M {
 			#clock-cells = <0>;
 			compatible = "fixed-factor-clock";
 			clock-div = <2>;
 			clock-mult = <1>;
 			clocks = <&pll208>;
+		};
+		semi_clk@104M {
+			#clock-cells = <0>;
+			compatible = "stericsson,u300-syscon-clk";
+			clock-type = <2>; /* Rest */
+			clock-id = <9>;
+			clocks = <&app104>;
 		};
 		app52: app_52_clk@52M {
 			#clock-cells = <0>;
···
 			clock-mult = <1>;
 			clocks = <&pll208>;
 		};
+		/* AHB subsystem clocks */
+		ahb_clk: ahb_subsys_clk@52M {
+			#clock-cells = <0>;
+			compatible = "stericsson,u300-syscon-clk";
+			clock-type = <2>; /* Rest */
+			clock-id = <10>;
+			clocks = <&app52>;
+		};
+		intcon_clk@52M {
+			#clock-cells = <0>;
+			compatible = "stericsson,u300-syscon-clk";
+			clock-type = <2>; /* Rest */
+			clock-id = <12>;
+			clocks = <&ahb_clk>;
+		};
+		emif_clk@52M {
+			#clock-cells = <0>;
+			compatible = "stericsson,u300-syscon-clk";
+			clock-type = <2>; /* Rest */
+			clock-id = <5>;
+			clocks = <&ahb_clk>;
+		};
+		dmac_clk: dmac_clk@52M {
+			#clock-cells = <0>;
+			compatible = "stericsson,u300-syscon-clk";
+			clock-type = <2>; /* Rest */
+			clock-id = <4>;
+			clocks = <&app52>;
+		};
+		fsmc_clk: fsmc_clk@52M {
+			#clock-cells = <0>;
+			compatible = "stericsson,u300-syscon-clk";
+			clock-type = <2>; /* Rest */
+			clock-id = <6>;
+			clocks = <&app52>;
+		};
+		xgam_clk: xgam_clk@52M {
+			#clock-cells = <0>;
+			compatible = "stericsson,u300-syscon-clk";
+			clock-type = <2>; /* Rest */
+			clock-id = <8>;
+			clocks = <&app52>;
+		};
 		app26: app_26_clk@26M {
 			#clock-cells = <0>;
 			compatible = "fixed-factor-clock";
 			clock-div = <2>;
 			clock-mult = <1>;
 			clocks = <&app52>;
+		};
+		/* Fast bridge  clocks */
+		fast_clk: fast_clk@26M {
+			#clock-cells = <0>;
+			compatible = "stericsson,u300-syscon-clk";
+			clock-type = <1>; /* Fast */
+			clock-id = <0>;
+			clocks = <&app26>;
+		};
+		i2c0_clk: i2c0_clk@26M {
+			#clock-cells = <0>;
+			compatible = "stericsson,u300-syscon-clk";
+			clock-type = <1>; /* Fast */
+			clock-id = <1>;
+			clocks = <&fast_clk>;
+		};
+		i2c1_clk: i2c1_clk@26M {
+			#clock-cells = <0>;
+			compatible = "stericsson,u300-syscon-clk";
+			clock-type = <1>; /* Fast */
+			clock-id = <2>;
+			clocks = <&fast_clk>;
+		};
+		mmc_pclk: mmc_p_clk@26M {
+			#clock-cells = <0>;
+			compatible = "stericsson,u300-syscon-clk";
+			clock-type = <1>; /* Fast */
+			clock-id = <5>;
+			clocks = <&fast_clk>;
+		};
+		spi_clk: spi_p_clk@26M {
+			#clock-cells = <0>;
+			compatible = "stericsson,u300-syscon-clk";
+			clock-type = <1>; /* Fast */
+			clock-id = <6>;
+			clocks = <&fast_clk>;
 		};
 	};
 
···
 		reg = <0xc0014000 0x1000>;
 		interrupt-parent = <&vica>;
 		interrupts = <24 25 26 27>;
+		clocks = <&apptimer_clk>;
 	};
 
 	gpio: gpio@c0016000 {
···
 		reg = <0xc0016000 0x1000>;
 		interrupt-parent = <&vicb>;
 		interrupts = <0 1 2 18 21 22 23>;
+		clocks = <&gpio_clk>;
 		interrupt-names = "gpio0", "gpio1", "gpio2", "gpio3",
 				"gpio4", "gpio5", "gpio6";
 		interrupt-controller;
···
 		reg = <0xc0017000 0x1000>;
 		interrupt-parent = <&vicb>;
 		interrupts = <10>;
+		clocks = <&rtc_clk>;
 	};
 
 	dmac: dma-controller@c00020000 {
···
 		interrupts = <2>;
 		#dma-cells = <1>;
 		dma-channels = <40>;
+		clocks = <&dmac_clk>;
 	};
 
 	/* A NAND flash of 128 MiB */
···
 			<0x80010000 0x4000>;	/* NAND Base CMD */
 		reg-names = "fsmc_regs", "nand_data", "nand_addr", "nand_cmd";
 		nand-skip-bbtscan;
+		clocks = <&fsmc_clk>;
 
 		partition@0 {
 		label = "boot records";
···
 		reg = <0xc0004000 0x1000>;
 		interrupt-parent = <&vicb>;
 		interrupts = <8>;
+		clocks = <&i2c0_clk>;
 		#address-cells = <1>;
 		#size-cells = <0>;
 		ab3100: ab3100@0x48 {
···
 		reg = <0xc0005000 0x1000>;
 		interrupt-parent = <&vicb>;
 		interrupts = <9>;
+		clocks = <&i2c1_clk>;
 		#address-cells = <1>;
 		#size-cells = <0>;
 		fwcam0: fwcam@0x10 {
···
 			reg = <0xc0013000 0x1000>;
 			interrupt-parent = <&vica>;
 			interrupts = <22>;
+			clocks = <&uart0_clk>, <&uart0_clk>;
+			clock-names = "apb_pclk", "uart0_clk";
 			dmas = <&dmac 17 &dmac 18>;
 			dma-names = "tx", "rx";
 		};
···
 			reg = <0xc0001000 0x1000>;
 			interrupt-parent = <&vicb>;
 			interrupts = <6 7>;
+			clocks = <&mmc_pclk>;
+			clock-names = "apb_pclk";
 			max-frequency = <24000000>;
 			bus-width = <4>; // SD-card slot
 			mmc-cap-mmc-highspeed;
···
 			reg = <0xc0006000 0x1000>;
 			interrupt-parent = <&vica>;
 			interrupts = <23>;
+			clocks = <&spi_clk>, <&spi_clk>;
+			clock-names = "apb_pclk", "spi_clk";
 			dmas = <&dmac 27 &dmac 28>;
 			dma-names = "tx", "rx";
 			num-cs = <3>;

arch/arm/mach-u300/timer.c

···
 	pr_info("U300 GP1 timer @ base: %p, IRQ: %d\n", u300_timer_base, irq);
 
 	/* Clock the interrupt controller */
-	clk = clk_get_sys("apptimer", NULL);
+	clk = of_clk_get(np, 0);
 	BUG_ON(IS_ERR(clk));
 	clk_prepare_enable(clk);
 	rate = clk_get_rate(clk);

drivers/clk/clk-u300.c

···
 	return clk;
 }
 
+#define U300_CLK_TYPE_SLOW 0
+#define U300_CLK_TYPE_FAST 1
+#define U300_CLK_TYPE_REST 2
+
+/**
+ * struct u300_clock - defines the bits and pieces for a certain clock
+ * @type: the clock type, slow fast or rest
+ * @id: the bit in the slow/fast/rest register for this clock
+ * @hw_ctrld: whether the clock is hardware controlled
+ * @clk_val: a value to poke in the one-write enable/disable registers
+ */
+struct u300_clock {
+	u8 type;
+	u8 id;
+	bool hw_ctrld;
+	u16 clk_val;
+};
+
+struct u300_clock const __initconst u300_clk_lookup[] = {
+	{
+		.type = U300_CLK_TYPE_REST,
+		.id = 3,
+		.hw_ctrld = true,
+		.clk_val = U300_SYSCON_SBCER_CPU_CLK_EN,
+	},
+	{
+		.type = U300_CLK_TYPE_REST,
+		.id = 4,
+		.hw_ctrld = true,
+		.clk_val = U300_SYSCON_SBCER_DMAC_CLK_EN,
+	},
+	{
+		.type = U300_CLK_TYPE_REST,
+		.id = 5,
+		.hw_ctrld = false,
+		.clk_val = U300_SYSCON_SBCER_EMIF_CLK_EN,
+	},
+	{
+		.type = U300_CLK_TYPE_REST,
+		.id = 6,
+		.hw_ctrld = false,
+		.clk_val = U300_SYSCON_SBCER_NANDIF_CLK_EN,
+	},
+	{
+		.type = U300_CLK_TYPE_REST,
+		.id = 8,
+		.hw_ctrld = true,
+		.clk_val = U300_SYSCON_SBCER_XGAM_CLK_EN,
+	},
+	{
+		.type = U300_CLK_TYPE_REST,
+		.id = 9,
+		.hw_ctrld = false,
+		.clk_val = U300_SYSCON_SBCER_SEMI_CLK_EN,
+	},
+	{
+		.type = U300_CLK_TYPE_REST,
+		.id = 10,
+		.hw_ctrld = true,
+		.clk_val = U300_SYSCON_SBCER_AHB_SUBSYS_BRIDGE_CLK_EN,
+	},
+	{
+		.type = U300_CLK_TYPE_REST,
+		.id = 12,
+		.hw_ctrld = false,
+		/* INTCON: cannot be enabled, just taken out of reset */
+		.clk_val = 0xFFFFU,
+	},
+	{
+		.type = U300_CLK_TYPE_FAST,
+		.id = 0,
+		.hw_ctrld = true,
+		.clk_val = U300_SYSCON_SBCER_FAST_BRIDGE_CLK_EN,
+	},
+	{
+		.type = U300_CLK_TYPE_FAST,
+		.id = 1,
+		.hw_ctrld = false,
+		.clk_val = U300_SYSCON_SBCER_I2C0_CLK_EN,
+	},
+	{
+		.type = U300_CLK_TYPE_FAST,
+		.id = 2,
+		.hw_ctrld = false,
+		.clk_val = U300_SYSCON_SBCER_I2C1_CLK_EN,
+	},
+	{
+		.type = U300_CLK_TYPE_FAST,
+		.id = 5,
+		.hw_ctrld = false,
+		.clk_val = U300_SYSCON_SBCER_MMC_CLK_EN,
+	},
+	{
+		.type = U300_CLK_TYPE_FAST,
+		.id = 6,
+		.hw_ctrld = false,
+		.clk_val = U300_SYSCON_SBCER_SPI_CLK_EN,
+	},
+	{
+		.type = U300_CLK_TYPE_SLOW,
+		.id = 0,
+		.hw_ctrld = true,
+		.clk_val = U300_SYSCON_SBCER_SLOW_BRIDGE_CLK_EN,
+	},
+	{
+		.type = U300_CLK_TYPE_SLOW,
+		.id = 1,
+		.hw_ctrld = false,
+		.clk_val = U300_SYSCON_SBCER_UART_CLK_EN,
+	},
+	{
+		.type = U300_CLK_TYPE_SLOW,
+		.id = 4,
+		.hw_ctrld = false,
+		.clk_val = U300_SYSCON_SBCER_GPIO_CLK_EN,
+	},
+	{
+		.type = U300_CLK_TYPE_SLOW,
+		.id = 6,
+		.hw_ctrld = true,
+		/* No clock enable register bit */
+		.clk_val = 0xFFFFU,
+	},
+	{
+		.type = U300_CLK_TYPE_SLOW,
+		.id = 7,
+		.hw_ctrld = false,
+		.clk_val = U300_SYSCON_SBCER_APP_TMR_CLK_EN,
+	},
+	{
+		.type = U300_CLK_TYPE_SLOW,
+		.id = 8,
+		.hw_ctrld = false,
+		.clk_val = U300_SYSCON_SBCER_ACC_TMR_CLK_EN,
+	},
+};
+
+static void __init of_u300_syscon_clk_init(struct device_node *np)
+{
+	struct clk *clk = ERR_PTR(-EINVAL);
+	const char *clk_name = np->name;
+	const char *parent_name;
+	void __iomem *res_reg;
+	void __iomem *en_reg;
+	u32 clk_type;
+	u32 clk_id;
+	int i;
+
+	if (of_property_read_u32(np, "clock-type", &clk_type)) {
+		pr_err("%s: syscon clock \"%s\" missing clock-type property\n",
+		       __func__, clk_name);
+		return;
+	}
+	if (of_property_read_u32(np, "clock-id", &clk_id)) {
+		pr_err("%s: syscon clock \"%s\" missing clock-id property\n",
+		       __func__, clk_name);
+		return;
+	}
+	parent_name = of_clk_get_parent_name(np, 0);
+
+	switch (clk_type) {
+	case U300_CLK_TYPE_SLOW:
+		res_reg = syscon_vbase + U300_SYSCON_RSR;
+		en_reg = syscon_vbase + U300_SYSCON_CESR;
+		break;
+	case U300_CLK_TYPE_FAST:
+		res_reg = syscon_vbase + U300_SYSCON_RFR;
+		en_reg = syscon_vbase + U300_SYSCON_CEFR;
+		break;
+	case U300_CLK_TYPE_REST:
+		res_reg = syscon_vbase + U300_SYSCON_RRR;
+		en_reg = syscon_vbase + U300_SYSCON_CERR;
+		break;
+	default:
+		pr_err("unknown clock type %x specified\n", clk_type);
+		return;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(u300_clk_lookup); i++) {
+		const struct u300_clock *u3clk = &u300_clk_lookup[i];
+
+		if (u3clk->type == clk_type && u3clk->id == clk_id)
+			clk = syscon_clk_register(NULL,
+						  clk_name, parent_name,
+						  0, u3clk->hw_ctrld,
+						  res_reg, u3clk->id,
+						  en_reg, u3clk->id,
+						  u3clk->clk_val);
+	}
+
+	if (!IS_ERR(clk)) {
+		of_clk_add_provider(np, of_clk_src_simple_get, clk);
+
+		/*
+		 * Some few system clocks - device tree does not
+		 * represent clocks without a corresponding device node.
+		 * for now we add these three clocks here.
+		 */
+		if (clk_type == U300_CLK_TYPE_REST && clk_id == 5)
+			clk_register_clkdev(clk, NULL, "pl172");
+		if (clk_type == U300_CLK_TYPE_REST && clk_id == 9)
+			clk_register_clkdev(clk, NULL, "semi");
+		if (clk_type == U300_CLK_TYPE_REST && clk_id == 12)
+			clk_register_clkdev(clk, NULL, "intcon");
+	}
+}
+
 /**
  * struct clk_mclk - U300 MCLK clock (MMC/SD clock)
  * @hw: corresponding clock hardware entry
···
 		.compatible = "fixed-factor-clock",
 		.data = of_fixed_factor_clk_setup,
 	},
+	{
+		.compatible = "stericsson,u300-syscon-clk",
+		.data = of_u300_syscon_clk_init,
+	},
 };
 
 void __init u300_clk_init(void __iomem *base)
···
 	writew(val, syscon_vbase + U300_SYSCON_PMCR);
 
 	of_clk_init(u300_clk_match);
-
-	/* Directly on the AMBA interconnect */
-	clk = syscon_clk_register(NULL, "cpu_clk", "app_208_clk", 0, true,
-				  syscon_vbase + U300_SYSCON_RRR, 3,
-				  syscon_vbase + U300_SYSCON_CERR, 3,
-				  U300_SYSCON_SBCER_CPU_CLK_EN);
-	clk = syscon_clk_register(NULL, "dmac_clk", "app_52_clk", 0, true,
-				  syscon_vbase + U300_SYSCON_RRR, 4,
-				  syscon_vbase + U300_SYSCON_CERR, 4,
-				  U300_SYSCON_SBCER_DMAC_CLK_EN);
-	clk_register_clkdev(clk, NULL, "dma");
-	clk = syscon_clk_register(NULL, "fsmc_clk", "app_52_clk", 0, false,
-				  syscon_vbase + U300_SYSCON_RRR, 6,
-				  syscon_vbase + U300_SYSCON_CERR, 6,
-				  U300_SYSCON_SBCER_NANDIF_CLK_EN);
-	clk_register_clkdev(clk, NULL, "fsmc-nand");
-	clk = syscon_clk_register(NULL, "xgam_clk", "app_52_clk", 0, true,
-				  syscon_vbase + U300_SYSCON_RRR, 8,
-				  syscon_vbase + U300_SYSCON_CERR, 8,
-				  U300_SYSCON_SBCER_XGAM_CLK_EN);
-	clk_register_clkdev(clk, NULL, "xgam");
-	clk = syscon_clk_register(NULL, "semi_clk", "app_104_clk", 0, false,
-				  syscon_vbase + U300_SYSCON_RRR, 9,
-				  syscon_vbase + U300_SYSCON_CERR, 9,
-				  U300_SYSCON_SBCER_SEMI_CLK_EN);
-	clk_register_clkdev(clk, NULL, "semi");
-
-	/* AHB bridge clocks */
-	clk = syscon_clk_register(NULL, "ahb_subsys_clk", "app_52_clk", 0, true,
-				  syscon_vbase + U300_SYSCON_RRR, 10,
-				  syscon_vbase + U300_SYSCON_CERR, 10,
-				  U300_SYSCON_SBCER_AHB_SUBSYS_BRIDGE_CLK_EN);
-	clk = syscon_clk_register(NULL, "intcon_clk", "ahb_subsys_clk", 0, false,
-				  syscon_vbase + U300_SYSCON_RRR, 12,
-				  syscon_vbase + U300_SYSCON_CERR, 12,
-				  /* Cannot be enabled, just taken out of reset */
-				  0xFFFFU);
-	clk_register_clkdev(clk, NULL, "intcon");
-	clk = syscon_clk_register(NULL, "emif_clk", "ahb_subsys_clk", 0, false,
-				  syscon_vbase + U300_SYSCON_RRR, 5,
-				  syscon_vbase + U300_SYSCON_CERR, 5,
-				  U300_SYSCON_SBCER_EMIF_CLK_EN);
-	clk_register_clkdev(clk, NULL, "pl172");
-
-	/* FAST bridge clocks */
-	clk = syscon_clk_register(NULL, "fast_clk", "app_26_clk", 0, true,
-				  syscon_vbase + U300_SYSCON_RFR, 0,
-				  syscon_vbase + U300_SYSCON_CEFR, 0,
-				  U300_SYSCON_SBCER_FAST_BRIDGE_CLK_EN);
-	clk = syscon_clk_register(NULL, "i2c0_p_clk", "fast_clk", 0, false,
-				  syscon_vbase + U300_SYSCON_RFR, 1,
-				  syscon_vbase + U300_SYSCON_CEFR, 1,
-				  U300_SYSCON_SBCER_I2C0_CLK_EN);
-	clk_register_clkdev(clk, NULL, "stu300.0");
-	clk = syscon_clk_register(NULL, "i2c1_p_clk", "fast_clk", 0, false,
-				  syscon_vbase + U300_SYSCON_RFR, 2,
-				  syscon_vbase + U300_SYSCON_CEFR, 2,
-				  U300_SYSCON_SBCER_I2C1_CLK_EN);
-	clk_register_clkdev(clk, NULL, "stu300.1");
-	clk = syscon_clk_register(NULL, "mmc_p_clk", "fast_clk", 0, false,
-				  syscon_vbase + U300_SYSCON_RFR, 5,
-				  syscon_vbase + U300_SYSCON_CEFR, 5,
-				  U300_SYSCON_SBCER_MMC_CLK_EN);
-	clk_register_clkdev(clk, "apb_pclk", "mmci");
-	clk = syscon_clk_register(NULL, "spi_p_clk", "fast_clk", 0, false,
-				  syscon_vbase + U300_SYSCON_RFR, 6,
-				  syscon_vbase + U300_SYSCON_CEFR, 6,
-				  U300_SYSCON_SBCER_SPI_CLK_EN);
-	/* The SPI has no external clock for the outward bus, uses the pclk */
-	clk_register_clkdev(clk, NULL, "pl022");
-	clk_register_clkdev(clk, "apb_pclk", "pl022");
-
-	/* SLOW bridge clocks */
-	clk = syscon_clk_register(NULL, "slow_clk", "pll13", 0, true,
-				  syscon_vbase + U300_SYSCON_RSR, 0,
-				  syscon_vbase + U300_SYSCON_CESR, 0,
-				  U300_SYSCON_SBCER_SLOW_BRIDGE_CLK_EN);
-	clk = syscon_clk_register(NULL, "uart0_clk", "slow_clk", 0, false,
-				  syscon_vbase + U300_SYSCON_RSR, 1,
-				  syscon_vbase + U300_SYSCON_CESR, 1,
-				  U300_SYSCON_SBCER_UART_CLK_EN);
-	/* Same clock is used for APB and outward bus */
-	clk_register_clkdev(clk, NULL, "uart0");
-	clk_register_clkdev(clk, "apb_pclk", "uart0");
-	clk = syscon_clk_register(NULL, "gpio_clk", "slow_clk", 0, false,
-				  syscon_vbase + U300_SYSCON_RSR, 4,
-				  syscon_vbase + U300_SYSCON_CESR, 4,
-				  U300_SYSCON_SBCER_GPIO_CLK_EN);
-	clk_register_clkdev(clk, NULL, "u300-gpio");
-	clk = syscon_clk_register(NULL, "keypad_clk", "slow_clk", 0, false,
-				  syscon_vbase + U300_SYSCON_RSR, 5,
-				  syscon_vbase + U300_SYSCON_CESR, 6,
-				  U300_SYSCON_SBCER_KEYPAD_CLK_EN);
-	clk_register_clkdev(clk, NULL, "coh901461-keypad");
-	clk = syscon_clk_register(NULL, "rtc_clk", "slow_clk", 0, true,
-				  syscon_vbase + U300_SYSCON_RSR, 6,
-				  /* No clock enable register bit */
-				  NULL, 0, 0xFFFFU);
-	clk_register_clkdev(clk, NULL, "rtc-coh901331");
-	clk = syscon_clk_register(NULL, "app_tmr_clk", "slow_clk", 0, false,
-				  syscon_vbase + U300_SYSCON_RSR, 7,
-				  syscon_vbase + U300_SYSCON_CESR, 7,
-				  U300_SYSCON_SBCER_APP_TMR_CLK_EN);
-	clk_register_clkdev(clk, NULL, "apptimer");
-	clk = syscon_clk_register(NULL, "acc_tmr_clk", "slow_clk", 0, false,
-				  syscon_vbase + U300_SYSCON_RSR, 8,
-				  syscon_vbase + U300_SYSCON_CESR, 8,
-				  U300_SYSCON_SBCER_ACC_TMR_CLK_EN);
-	clk_register_clkdev(clk, NULL, "timer");
 
 	/* Then this special MMC/SD clock */
 	clk = mclk_clk_register(NULL, "mmc_clk", "mmc_p_clk", false);