zynq: Move zynq to clock framework

Move the zynq to clock framework and remove unused functions as well as
the CONFIG_ZYNQ_PS_CLK_FREQ configuration.

Signed-off-by: Stefan Herbrechtsmeier <stefan.herbrechtsmeier@weidmueller.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

6 files changed, 53 insertions, 631 deletions

diff --git a/arch/arm/mach-zynq/clk.c b/arch/arm/mach-zynq/clk.c
index 570ebd7..1369cd0 100644
--- a/arch/arm/mach-zynq/clk.c
+++ b/arch/arm/mach-zynq/clk.c
@@ -4,77 +4,13 @@
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */
+#include <clk.h>
 #include <common.h>
-#include <errno.h>
-#include <asm/io.h>
-#include <asm/arch/hardware.h>
+#include <dm.h>
 #include <asm/arch/clk.h>
 
-/* Board oscillator frequency */
-#ifndef CONFIG_ZYNQ_PS_CLK_FREQ
-# define CONFIG_ZYNQ_PS_CLK_FREQ	33333333UL
-#endif
-
-/* Register bitfield defines */
-#define PLLCTRL_FBDIV_MASK	0x7f000
-#define PLLCTRL_FBDIV_SHIFT	12
-#define PLLCTRL_BPFORCE_MASK	(1 << 4)
-#define PLLCTRL_PWRDWN_MASK	2
-#define PLLCTRL_PWRDWN_SHIFT	1
-#define PLLCTRL_RESET_MASK	1
-#define PLLCTRL_RESET_SHIFT	0
-
-#define ZYNQ_CLK_MAXDIV		0x3f
-#define CLK_CTRL_DIV1_SHIFT	20
-#define CLK_CTRL_DIV1_MASK	(ZYNQ_CLK_MAXDIV << CLK_CTRL_DIV1_SHIFT)
-#define CLK_CTRL_DIV0_SHIFT	8
-#define CLK_CTRL_DIV0_MASK	(ZYNQ_CLK_MAXDIV << CLK_CTRL_DIV0_SHIFT)
-#define CLK_CTRL_SRCSEL_SHIFT	4
-#define CLK_CTRL_SRCSEL_MASK	(0x3 << CLK_CTRL_SRCSEL_SHIFT)
-
-#define CLK_CTRL_DIV2X_SHIFT	26
-#define CLK_CTRL_DIV2X_MASK	(ZYNQ_CLK_MAXDIV << CLK_CTRL_DIV2X_SHIFT)
-#define CLK_CTRL_DIV3X_SHIFT	20
-#define CLK_CTRL_DIV3X_MASK	(ZYNQ_CLK_MAXDIV << CLK_CTRL_DIV3X_SHIFT)
-
-#define ZYNQ_CLKMUX_SEL_0	0
-#define ZYNQ_CLKMUX_SEL_1	1
-#define ZYNQ_CLKMUX_SEL_2	2
-#define ZYNQ_CLKMUX_SEL_3	3
-
 DECLARE_GLOBAL_DATA_PTR;
 
-struct clk;
-
-/**
- * struct zynq_clk_ops:
- * @set_rate:	Function pointer to set_rate() implementation
- * @get_rate:	Function pointer to get_rate() implementation
- */
-struct zynq_clk_ops {
-	int (*set_rate)(struct clk *clk, unsigned long rate);
-	unsigned long (*get_rate)(struct clk *clk);
-};
-
-/**
- * struct clk:
- * @frequency:	Currenct frequency
- * @parent:	Parent clock
- * @flags:	Clock flags
- * @reg:	Clock control register
- * @ops:	Clock operations
- */
-struct clk {
-	unsigned long	frequency;
-	enum zynq_clk	parent;
-	unsigned int	flags;
-	u32		*reg;
-	struct zynq_clk_ops	ops;
-};
-#define ZYNQ_CLK_FLAGS_HAS_2_DIVS	1
-
-static struct clk clks[clk_max];
-
 static const char * const clk_names[clk_max] = {
 	"armpll", "ddrpll", "iopll",
 	"cpu_6or4x", "cpu_3or2x", "cpu_2x", "cpu_1x",
@@ -90,548 +26,43 @@ static const char * const clk_names[clk_max] = {
 };
 
 /**
- * __zynq_clk_cpu_get_parent() - Decode clock multiplexer
- * @srcsel:	Mux select value
- * Returns the clock identifier associated with the selected mux input.
- */
-static int __zynq_clk_cpu_get_parent(unsigned int srcsel)
-{
-	unsigned int ret;
-
-	switch (srcsel) {
-	case ZYNQ_CLKMUX_SEL_0:
-	case ZYNQ_CLKMUX_SEL_1:
-		ret = armpll_clk;
-		break;
-	case ZYNQ_CLKMUX_SEL_2:
-		ret = ddrpll_clk;
-		break;
-	case ZYNQ_CLKMUX_SEL_3:
-		ret = iopll_clk;
-		break;
-	default:
-		ret = armpll_clk;
-		break;
-	}
-
-	return ret;
-}
-
-/**
- * ddr2x_get_rate() - Get clock rate of DDR2x clock
- * @clk:	Clock handle
- * Returns the current clock rate of @clk.
- */
-static unsigned long ddr2x_get_rate(struct clk *clk)
-{
-	u32 clk_ctrl = readl(clk->reg);
-	u32 div = (clk_ctrl & CLK_CTRL_DIV2X_MASK) >> CLK_CTRL_DIV2X_SHIFT;
-
-	return DIV_ROUND_CLOSEST(zynq_clk_get_rate(clk->parent), div);
-}
-
-/**
- * ddr3x_get_rate() - Get clock rate of DDR3x clock
- * @clk:	Clock handle
- * Returns the current clock rate of @clk.
- */
-static unsigned long ddr3x_get_rate(struct clk *clk)
-{
-	u32 clk_ctrl = readl(clk->reg);
-	u32 div = (clk_ctrl & CLK_CTRL_DIV3X_MASK) >> CLK_CTRL_DIV3X_SHIFT;
-
-	return DIV_ROUND_CLOSEST(zynq_clk_get_rate(clk->parent), div);
-}
-
-static void init_ddr_clocks(void)
-{
-	u32 div0, div1;
-	unsigned long prate = zynq_clk_get_rate(ddrpll_clk);
-	u32 clk_ctrl = readl(&slcr_base->ddr_clk_ctrl);
-
-	/* DDR2x */
-	clks[ddr2x_clk].reg = &slcr_base->ddr_clk_ctrl;
-	clks[ddr2x_clk].parent = ddrpll_clk;
-	clks[ddr2x_clk].frequency = ddr2x_get_rate(&clks[ddr2x_clk]);
-	clks[ddr2x_clk].ops.get_rate = ddr2x_get_rate;
-
-	/* DDR3x */
-	clks[ddr3x_clk].reg = &slcr_base->ddr_clk_ctrl;
-	clks[ddr3x_clk].parent = ddrpll_clk;
-	clks[ddr3x_clk].frequency = ddr3x_get_rate(&clks[ddr3x_clk]);
-	clks[ddr3x_clk].ops.get_rate = ddr3x_get_rate;
-
-	/* DCI */
-	clk_ctrl = readl(&slcr_base->dci_clk_ctrl);
-	div0 = (clk_ctrl & CLK_CTRL_DIV0_MASK) >> CLK_CTRL_DIV0_SHIFT;
-	div1 = (clk_ctrl & CLK_CTRL_DIV1_MASK) >> CLK_CTRL_DIV1_SHIFT;
-	clks[dci_clk].reg = &slcr_base->dci_clk_ctrl;
-	clks[dci_clk].parent = ddrpll_clk;
-	clks[dci_clk].frequency = DIV_ROUND_CLOSEST(
-			DIV_ROUND_CLOSEST(prate, div0), div1);
-
-	gd->bd->bi_ddr_freq = clks[ddr3x_clk].frequency / 1000000;
-}
-
-static void init_cpu_clocks(void)
-{
-	int clk_621;
-	u32 reg, div, srcsel;
-	enum zynq_clk parent;
-
-	reg = readl(&slcr_base->arm_clk_ctrl);
-	clk_621 = readl(&slcr_base->clk_621_true) & 1;
-	div = (reg & CLK_CTRL_DIV0_MASK) >> CLK_CTRL_DIV0_SHIFT;
-	srcsel = (reg & CLK_CTRL_SRCSEL_MASK) >> CLK_CTRL_SRCSEL_SHIFT;
-	parent = __zynq_clk_cpu_get_parent(srcsel);
-
-	/* cpu clocks */
-	clks[cpu_6or4x_clk].reg = &slcr_base->arm_clk_ctrl;
-	clks[cpu_6or4x_clk].parent = parent;
-	clks[cpu_6or4x_clk].frequency = DIV_ROUND_CLOSEST(
-			zynq_clk_get_rate(parent), div);
-
-	clks[cpu_3or2x_clk].reg = &slcr_base->arm_clk_ctrl;
-	clks[cpu_3or2x_clk].parent = cpu_6or4x_clk;
-	clks[cpu_3or2x_clk].frequency = zynq_clk_get_rate(cpu_6or4x_clk) / 2;
-
-	clks[cpu_2x_clk].reg = &slcr_base->arm_clk_ctrl;
-	clks[cpu_2x_clk].parent = cpu_6or4x_clk;
-	clks[cpu_2x_clk].frequency = zynq_clk_get_rate(cpu_6or4x_clk) /
-			(2 + clk_621);
-
-	clks[cpu_1x_clk].reg = &slcr_base->arm_clk_ctrl;
-	clks[cpu_1x_clk].parent = cpu_6or4x_clk;
-	clks[cpu_1x_clk].frequency = zynq_clk_get_rate(cpu_6or4x_clk) /
-			(4 + 2 * clk_621);
-}
-
-/**
- * periph_calc_two_divs() - Calculate clock dividers
- * @cur_rate:	Current clock rate
- * @tgt_rate:	Target clock rate
- * @prate:	Parent clock rate
- * @div0:	First divider (output)
- * @div1:	Second divider (output)
- * Returns the actual clock rate possible.
- *
- * Calculates clock dividers for clocks with two 6-bit dividers.
- */
-static unsigned long periph_calc_two_divs(unsigned long cur_rate,
-		unsigned long tgt_rate, unsigned long prate, u32 *div0,
-		u32 *div1)
-{
-	long err, best_err = (long)(~0UL >> 1);
-	unsigned long rate, best_rate = 0;
-	u32 d0, d1;
-
-	for (d0 = 1; d0 <= ZYNQ_CLK_MAXDIV; d0++) {
-		for (d1 = 1; d1 <= ZYNQ_CLK_MAXDIV >> 1; d1++) {
-			rate = DIV_ROUND_CLOSEST(DIV_ROUND_CLOSEST(prate, d0),
-					d1);
-			err = abs(rate - tgt_rate);
-
-			if (err < best_err) {
-				*div0 = d0;
-				*div1 = d1;
-				best_err = err;
-				best_rate = rate;
-			}
-		}
-	}
-
-	return best_rate;
-}
-
-/**
- * zynq_clk_periph_set_rate() - Set clock rate
- * @clk:	Handle of the peripheral clock
- * @rate:	New clock rate
- * Sets the clock frequency of @clk to @rate. Returns zero on success.
- */
-static int zynq_clk_periph_set_rate(struct clk *clk,
-		unsigned long rate)
-{
-	u32 ctrl, div0 = 0, div1 = 0;
-	unsigned long prate, new_rate, cur_rate = clk->frequency;
-
-	ctrl = readl(clk->reg);
-	prate = zynq_clk_get_rate(clk->parent);
-	ctrl &= ~CLK_CTRL_DIV0_MASK;
-
-	if (clk->flags & ZYNQ_CLK_FLAGS_HAS_2_DIVS) {
-		ctrl &= ~CLK_CTRL_DIV1_MASK;
-		new_rate = periph_calc_two_divs(cur_rate, rate, prate, &div0,
-				&div1);
-		ctrl |= div1 << CLK_CTRL_DIV1_SHIFT;
-	} else {
-		div0 = DIV_ROUND_CLOSEST(prate, rate);
-		div0 &= ZYNQ_CLK_MAXDIV;
-		new_rate = DIV_ROUND_CLOSEST(rate, div0);
-	}
-
-	/* write new divs to hardware */
-	ctrl |= div0 << CLK_CTRL_DIV0_SHIFT;
-	writel(ctrl, clk->reg);
-
-	/* update frequency in clk framework */
-	clk->frequency = new_rate;
-
-	return 0;
-}
-
-/**
- * zynq_clk_periph_get_rate() - Get clock rate
- * @clk:	Handle of the peripheral clock
- * Returns the current clock rate of @clk.
- */
-static unsigned long zynq_clk_periph_get_rate(struct clk *clk)
-{
-	u32 clk_ctrl = readl(clk->reg);
-	u32 div0 = (clk_ctrl & CLK_CTRL_DIV0_MASK) >> CLK_CTRL_DIV0_SHIFT;
-	u32 div1 = 1;
-
-	if (clk->flags & ZYNQ_CLK_FLAGS_HAS_2_DIVS)
-		div1 = (clk_ctrl & CLK_CTRL_DIV1_MASK) >> CLK_CTRL_DIV1_SHIFT;
-
-	/* a register value of zero == division by 1 */
-	if (!div0)
-		div0 = 1;
-	if (!div1)
-		div1 = 1;
-
-	return
-		DIV_ROUND_CLOSEST(
-			DIV_ROUND_CLOSEST(zynq_clk_get_rate(clk->parent), div0),
-			div1);
-}
-
-/**
- * __zynq_clk_periph_get_parent() - Decode clock multiplexer
- * @srcsel:	Mux select value
- * Returns the clock identifier associated with the selected mux input.
- */
-static enum zynq_clk __zynq_clk_periph_get_parent(u32 srcsel)
-{
-	switch (srcsel) {
-	case ZYNQ_CLKMUX_SEL_0:
-	case ZYNQ_CLKMUX_SEL_1:
-		return iopll_clk;
-	case ZYNQ_CLKMUX_SEL_2:
-		return armpll_clk;
-	case ZYNQ_CLKMUX_SEL_3:
-		return ddrpll_clk;
-	default:
-		return 0;
-	}
-}
-
-/**
- * zynq_clk_periph_get_parent() - Decode clock multiplexer
- * @clk:	Clock handle
- * Returns the clock identifier associated with the selected mux input.
- */
-static enum zynq_clk zynq_clk_periph_get_parent(struct clk *clk)
-{
-	u32 clk_ctrl = readl(clk->reg);
-	u32 srcsel = (clk_ctrl & CLK_CTRL_SRCSEL_MASK) >> CLK_CTRL_SRCSEL_SHIFT;
-
-	return __zynq_clk_periph_get_parent(srcsel);
-}
-
-/**
- * zynq_clk_register_periph_clk() - Set up a peripheral clock with the framework
- * @clk:	Pointer to struct clk for the clock
- * @ctrl:	Clock control register
- * @two_divs:	Indicates whether the clock features one or two dividers
- */
-static int zynq_clk_register_periph_clk(struct clk *clk, u32 *ctrl,
-		bool two_divs)
-{
-	clk->reg = ctrl;
-	if (two_divs)
-		clk->flags = ZYNQ_CLK_FLAGS_HAS_2_DIVS;
-	clk->parent = zynq_clk_periph_get_parent(clk);
-	clk->frequency = zynq_clk_periph_get_rate(clk);
-	clk->ops.get_rate = zynq_clk_periph_get_rate;
-	clk->ops.set_rate = zynq_clk_periph_set_rate;
-
-	return 0;
-}
-
-static void init_periph_clocks(void)
-{
-	zynq_clk_register_periph_clk(&clks[gem0_clk],
-				     &slcr_base->gem0_clk_ctrl, 1);
-	zynq_clk_register_periph_clk(&clks[gem1_clk],
-				     &slcr_base->gem1_clk_ctrl, 1);
-
-	zynq_clk_register_periph_clk(&clks[smc_clk],
-				     &slcr_base->smc_clk_ctrl, 0);
-
-	zynq_clk_register_periph_clk(&clks[lqspi_clk],
-				     &slcr_base->lqspi_clk_ctrl, 0);
-
-	zynq_clk_register_periph_clk(&clks[sdio0_clk],
-				     &slcr_base->sdio_clk_ctrl, 0);
-	zynq_clk_register_periph_clk(&clks[sdio1_clk],
-				     &slcr_base->sdio_clk_ctrl, 0);
-
-	zynq_clk_register_periph_clk(&clks[spi0_clk],
-				     &slcr_base->spi_clk_ctrl, 0);
-	zynq_clk_register_periph_clk(&clks[spi1_clk],
-				     &slcr_base->spi_clk_ctrl, 0);
-
-	zynq_clk_register_periph_clk(&clks[uart0_clk],
-				     &slcr_base->uart_clk_ctrl, 0);
-	zynq_clk_register_periph_clk(&clks[uart1_clk],
-				     &slcr_base->uart_clk_ctrl, 0);
-
-	zynq_clk_register_periph_clk(&clks[dbg_trc_clk],
-				     &slcr_base->dbg_clk_ctrl, 0);
-	zynq_clk_register_periph_clk(&clks[dbg_apb_clk],
-				     &slcr_base->dbg_clk_ctrl, 0);
-
-	zynq_clk_register_periph_clk(&clks[pcap_clk],
-				     &slcr_base->pcap_clk_ctrl, 0);
-
-	zynq_clk_register_periph_clk(&clks[fclk0_clk],
-				     &slcr_base->fpga0_clk_ctrl, 1);
-	zynq_clk_register_periph_clk(&clks[fclk1_clk],
-				     &slcr_base->fpga1_clk_ctrl, 1);
-	zynq_clk_register_periph_clk(&clks[fclk2_clk],
-				     &slcr_base->fpga2_clk_ctrl, 1);
-	zynq_clk_register_periph_clk(&clks[fclk3_clk],
-				     &slcr_base->fpga3_clk_ctrl, 1);
-}
-
-/**
- * zynq_clk_register_aper_clk() - Set up a APER clock with the framework
- * @clk:	Pointer to struct clk for the clock
- * @ctrl:	Clock control register
- */
-static void zynq_clk_register_aper_clk(struct clk *clk, u32 *ctrl)
-{
-	clk->reg = ctrl;
-	clk->parent = cpu_1x_clk;
-	clk->frequency = zynq_clk_get_rate(clk->parent);
-}
-
-static void init_aper_clocks(void)
-{
-	zynq_clk_register_aper_clk(&clks[usb0_aper_clk],
-				   &slcr_base->aper_clk_ctrl);
-	zynq_clk_register_aper_clk(&clks[usb1_aper_clk],
-				   &slcr_base->aper_clk_ctrl);
-
-	zynq_clk_register_aper_clk(&clks[gem0_aper_clk],
-				   &slcr_base->aper_clk_ctrl);
-	zynq_clk_register_aper_clk(&clks[gem1_aper_clk],
-				   &slcr_base->aper_clk_ctrl);
-
-	zynq_clk_register_aper_clk(&clks[sdio0_aper_clk],
-				   &slcr_base->aper_clk_ctrl);
-	zynq_clk_register_aper_clk(&clks[sdio1_aper_clk],
-				   &slcr_base->aper_clk_ctrl);
-
-	zynq_clk_register_aper_clk(&clks[spi0_aper_clk],
-				   &slcr_base->aper_clk_ctrl);
-	zynq_clk_register_aper_clk(&clks[spi1_aper_clk],
-				   &slcr_base->aper_clk_ctrl);
-
-	zynq_clk_register_aper_clk(&clks[can0_aper_clk],
-				   &slcr_base->aper_clk_ctrl);
-	zynq_clk_register_aper_clk(&clks[can1_aper_clk],
-				   &slcr_base->aper_clk_ctrl);
-
-	zynq_clk_register_aper_clk(&clks[i2c0_aper_clk],
-				   &slcr_base->aper_clk_ctrl);
-	zynq_clk_register_aper_clk(&clks[i2c1_aper_clk],
-				   &slcr_base->aper_clk_ctrl);
-
-	zynq_clk_register_aper_clk(&clks[uart0_aper_clk],
-				   &slcr_base->aper_clk_ctrl);
-	zynq_clk_register_aper_clk(&clks[uart1_aper_clk],
-				   &slcr_base->aper_clk_ctrl);
-
-	zynq_clk_register_aper_clk(&clks[gpio_aper_clk],
-				   &slcr_base->aper_clk_ctrl);
-
-	zynq_clk_register_aper_clk(&clks[lqspi_aper_clk],
-				   &slcr_base->aper_clk_ctrl);
-
-	zynq_clk_register_aper_clk(&clks[smc_aper_clk],
-				   &slcr_base->aper_clk_ctrl);
-}
-
-/**
- * __zynq_clk_pll_get_rate() - Get PLL rate
- * @addr:	Address of the PLL's control register
- * Returns the current PLL output rate.
- */
-static unsigned long __zynq_clk_pll_get_rate(u32 *addr)
-{
-	u32 reg, mul, bypass;
-
-	reg = readl(addr);
-	bypass = reg & PLLCTRL_BPFORCE_MASK;
-	if (bypass)
-		mul = 1;
-	else
-		mul = (reg & PLLCTRL_FBDIV_MASK) >> PLLCTRL_FBDIV_SHIFT;
-
-	return CONFIG_ZYNQ_PS_CLK_FREQ * mul;
-}
-
-/**
- * zynq_clk_pll_get_rate() - Get PLL rate
- * @pll:	Handle of the PLL
- * Returns the current clock rate of @pll.
- */
-static unsigned long zynq_clk_pll_get_rate(struct clk *pll)
-{
-	return __zynq_clk_pll_get_rate(pll->reg);
-}
-
-/**
- * zynq_clk_register_pll() - Set up a PLL with the framework
- * @clk:	Pointer to struct clk for the PLL
- * @ctrl:	PLL control register
- * @prate:	PLL input clock rate
- */
-static void zynq_clk_register_pll(struct clk *clk, u32 *ctrl,
-		unsigned long prate)
-{
-	clk->reg = ctrl;
-	clk->frequency = zynq_clk_pll_get_rate(clk);
-	clk->ops.get_rate = zynq_clk_pll_get_rate;
-}
-
-/**
- * clkid_2_register() - Get clock control register
- * @id:	Clock identifier of one of the PLLs
- * Returns the address of the requested PLL's control register.
- */
-static u32 *clkid_2_register(enum zynq_clk id)
-{
-	switch (id) {
-	case armpll_clk:
-		return &slcr_base->arm_pll_ctrl;
-	case ddrpll_clk:
-		return &slcr_base->ddr_pll_ctrl;
-	case iopll_clk:
-		return &slcr_base->io_pll_ctrl;
-	default:
-		return &slcr_base->io_pll_ctrl;
-	}
-}
-
-/* API */
-/**
- * zynq_clk_early_init() - Early init for the clock framework
- *
- * This function is called from before relocation and sets up the CPU clock
- * frequency in the global data struct.
- */
-void zynq_clk_early_init(void)
-{
-	u32 reg = readl(&slcr_base->arm_clk_ctrl);
-	u32 div = (reg & CLK_CTRL_DIV0_MASK) >> CLK_CTRL_DIV0_SHIFT;
-	u32 srcsel = (reg & CLK_CTRL_SRCSEL_MASK) >> CLK_CTRL_SRCSEL_SHIFT;
-	enum zynq_clk parent = __zynq_clk_cpu_get_parent(srcsel);
-	u32 *pllreg = clkid_2_register(parent);
-	unsigned long prate = __zynq_clk_pll_get_rate(pllreg);
-
-	if (!div)
-		div = 1;
-
-	gd->cpu_clk = DIV_ROUND_CLOSEST(prate, div);
-}
-
-/**
- * get_uart_clk() - Get UART input frequency
- * @dev_index:	UART ID
- * Returns UART input clock frequency in Hz.
- *
- * Compared to zynq_clk_get_rate() this function is designed to work before
- * relocation and can be called when the serial UART is set up.
- */
-unsigned long get_uart_clk(int dev_index)
-{
-	u32 reg = readl(&slcr_base->uart_clk_ctrl);
-	u32 div = (reg & CLK_CTRL_DIV0_MASK) >> CLK_CTRL_DIV0_SHIFT;
-	u32 srcsel = (reg & CLK_CTRL_SRCSEL_MASK) >> CLK_CTRL_SRCSEL_SHIFT;
-	enum zynq_clk parent = __zynq_clk_periph_get_parent(srcsel);
-	u32 *pllreg = clkid_2_register(parent);
-	unsigned long prate = __zynq_clk_pll_get_rate(pllreg);
-
-	if (!div)
-		div = 1;
-
-	return DIV_ROUND_CLOSEST(prate, div);
-}
-
-/**
- * set_cpu_clk_info() - Initialize clock framework
- * Always returns zero.
+ * set_cpu_clk_info() - Setup clock information
  *
  * This function is called from common code after relocation and sets up the
- * clock framework. The framework must not be used before this function had been
- * called.
+ * clock information.
  */
 int set_cpu_clk_info(void)
 {
-	zynq_clk_register_pll(&clks[armpll_clk], &slcr_base->arm_pll_ctrl,
-			      CONFIG_ZYNQ_PS_CLK_FREQ);
-	zynq_clk_register_pll(&clks[ddrpll_clk], &slcr_base->ddr_pll_ctrl,
-			      CONFIG_ZYNQ_PS_CLK_FREQ);
-	zynq_clk_register_pll(&clks[iopll_clk], &slcr_base->io_pll_ctrl,
-			      CONFIG_ZYNQ_PS_CLK_FREQ);
-
-	init_ddr_clocks();
-	init_cpu_clocks();
-	init_periph_clocks();
-	init_aper_clocks();
-
-	gd->bd->bi_arm_freq = gd->cpu_clk / 1000000;
+	struct clk clk;
+	struct udevice *dev;
+	ulong rate;
+	int i, ret;
+
+	ret = uclass_get_device_by_driver(UCLASS_CLK,
+		DM_GET_DRIVER(zynq_clk), &dev);
+	if (ret)
+		return ret;
+
+	for (i = 0; i < 2; i++) {
+		clk.id = i ? ddr3x_clk : cpu_6or4x_clk;
+		ret = clk_request(dev, &clk);
+		if (ret < 0)
+			return ret;
+
+		rate = clk_get_rate(&clk) / 1000000;
+		if (i)
+			gd->bd->bi_ddr_freq = rate;
+		else
+			gd->bd->bi_arm_freq = rate;
+
+		clk_free(&clk);
+	}
 	gd->bd->bi_dsp_freq = 0;
 
 	return 0;
 }
 
 /**
- * zynq_clk_get_rate() - Get clock rate
- * @clk:	Clock identifier
- * Returns the current clock rate of @clk on success or zero for an invalid
- * clock id.
- */
-unsigned long zynq_clk_get_rate(enum zynq_clk clk)
-{
-	if (clk < 0 || clk >= clk_max)
-		return 0;
-
-	return clks[clk].frequency;
-}
-
-/**
- * zynq_clk_set_rate() - Set clock rate
- * @clk:	Clock identifier
- * @rate:	Requested clock rate
- * Passes on the return value from the clock's set_rate() function or negative
- * errno.
- */
-int zynq_clk_set_rate(enum zynq_clk clk, unsigned long rate)
-{
-	if (clk < 0 || clk >= clk_max)
-		return -ENODEV;
-
-	if (clks[clk].ops.set_rate)
-		return clks[clk].ops.set_rate(&clks[clk], rate);
-
-	return -ENXIO;
-}
-
-/**
  * soc_clk_dump() - Print clock frequencies
  * Returns zero on success
  *
@@ -639,13 +70,35 @@ int zynq_clk_set_rate(enum zynq_clk clk, unsigned long rate)
  */
 int soc_clk_dump(void)
 {
-	int i;
+	struct udevice *dev;
+	int i, ret;
+
+	ret = uclass_get_device_by_driver(UCLASS_CLK,
+		DM_GET_DRIVER(zynq_clk), &dev);
+	if (ret)
+		return ret;
 
 	printf("clk\t\tfrequency\n");
 	for (i = 0; i < clk_max; i++) {
 		const char *name = clk_names[i];
-		if (name)
-			printf("%10s%20lu\n", name, zynq_clk_get_rate(i));
+		if (name) {
+			struct clk clk;
+			unsigned long rate;
+
+			clk.id = i;
+			ret = clk_request(dev, &clk);
+			if (ret < 0)
+				return ret;
+
+			rate = clk_get_rate(&clk);
+
+			clk_free(&clk);
+
+			if (rate == (unsigned long)-ENOSYS)
+				printf("%10s%20s\n", name, "unknown");
+			else
+				printf("%10s%20lu\n", name, rate);
+		}
 	}
 
 	return 0;
diff --git a/arch/arm/mach-zynq/cpu.c b/arch/arm/mach-zynq/cpu.c
index ba9171e..ee1c1a9 100644
--- a/arch/arm/mach-zynq/cpu.c
+++ b/arch/arm/mach-zynq/cpu.c
@@ -35,7 +35,6 @@ int arch_cpu_init(void)
 	writel(0xC, &slcr_base->ddr_urgent);
 #endif
 #endif
-	zynq_clk_early_init();
 	zynq_slcr_lock();
 
 	return 0;
diff --git a/arch/arm/mach-zynq/include/mach/clk.h b/arch/arm/mach-zynq/include/mach/clk.h
index 5c2758a..8a039ae 100644
--- a/arch/arm/mach-zynq/include/mach/clk.h
+++ b/arch/arm/mach-zynq/include/mach/clk.h
@@ -20,9 +20,4 @@ enum zynq_clk {
 	uart0_aper_clk, uart1_aper_clk, gpio_aper_clk, lqspi_aper_clk,
 	smc_aper_clk, swdt_clk, dbg_trc_clk, dbg_apb_clk, clk_max};
 
-void zynq_clk_early_init(void);
-int zynq_clk_set_rate(enum zynq_clk clk, unsigned long rate);
-unsigned long zynq_clk_get_rate(enum zynq_clk clk);
-unsigned long get_uart_clk(int dev_id);
-
 #endif
diff --git a/arch/arm/mach-zynq/include/mach/sys_proto.h b/arch/arm/mach-zynq/include/mach/sys_proto.h
index 44c9b50..67238e7 100644
--- a/arch/arm/mach-zynq/include/mach/sys_proto.h
+++ b/arch/arm/mach-zynq/include/mach/sys_proto.h
@@ -10,7 +10,6 @@
 extern void zynq_slcr_lock(void);
 extern void zynq_slcr_unlock(void);
 extern void zynq_slcr_cpu_reset(void);
-extern void zynq_slcr_gem_clk_setup(u32 gem_id, unsigned long clk_rate);
 extern void zynq_slcr_devcfg_disable(void);
 extern void zynq_slcr_devcfg_enable(void);
 extern u32 zynq_slcr_get_boot_mode(void);
diff --git a/arch/arm/mach-zynq/slcr.c b/arch/arm/mach-zynq/slcr.c
index c1129cd..2a207ae 100644
--- a/arch/arm/mach-zynq/slcr.c
+++ b/arch/arm/mach-zynq/slcr.c
@@ -9,7 +9,6 @@
 #include <malloc.h>
 #include <asm/arch/hardware.h>
 #include <asm/arch/sys_proto.h>
-#include <asm/arch/clk.h>
 
 #define SLCR_LOCK_MAGIC		0x767B
 #define SLCR_UNLOCK_MAGIC	0xDF0D
@@ -124,27 +123,6 @@ void zynq_slcr_cpu_reset(void)
 	writel(1, &slcr_base->pss_rst_ctrl);
 }
 
-/* Setup clk for network */
-void zynq_slcr_gem_clk_setup(u32 gem_id, unsigned long clk_rate)
-{
-	int ret;
-
-	zynq_slcr_unlock();
-
-	if (gem_id > 1) {
-		printf("Non existing GEM id %d\n", gem_id);
-		goto out;
-	}
-
-	ret = zynq_clk_set_rate(gem0_clk + gem_id, clk_rate);
-	if (ret)
-		goto out;
-
-	udelay(100000);
-out:
-	zynq_slcr_lock();
-}
-
 void zynq_slcr_devcfg_disable(void)
 {
 	u32 reg_val;
diff --git a/arch/arm/mach-zynq/timer.c b/arch/arm/mach-zynq/timer.c
index 0335cbe..b1bb3b8 100644
--- a/arch/arm/mach-zynq/timer.c
+++ b/arch/arm/mach-zynq/timer.c
@@ -61,7 +61,6 @@ int timer_init(void)
 			(TIMER_PRESCALE << SCUTIMER_CONTROL_PRESCALER_SHIFT) |
 			SCUTIMER_CONTROL_ENABLE_MASK;
 
-#if defined(CONFIG_CLK) || defined(CONFIG_SPL_CLK)
 	struct udevice *dev;
 	struct clk clk;
 	int ret;
@@ -79,7 +78,6 @@ int timer_init(void)
 	gd->cpu_clk = clk_get_rate(&clk);
 
 	clk_free(&clk);
-#endif
 
 	gd->arch.timer_rate_hz = (gd->cpu_clk / 2) / (TIMER_PRESCALE + 1);