[PATCH v2 0/5] Zynq: revised CCF code

[PATCH v2 0/5] Zynq: revised CCF code

[Soren Brinkmann]

I rebased this series on v3.10-rc1 eliminating all dependencies and incorporated
Greg's feedback.
I'll push this also to my github repository.
https://github.com/sorenb-xlnx/linux-xlnx/tree/zynq/clkc

v2:
 - dropped the 'sort #includes' patches

	S?ren


Soren Brinkmann (5):
  tty: xuartps: Remove suspend/resume functions
  clk: zynq: Factor out PLL driver
  clk: zynq: Add clock controller driver
  arm: zynq: Migrate platform to clock controller
  clk: zynq: Remove deprecated clock code

 .../devicetree/bindings/clock/zynq-7000.txt        | 127 +++--
 arch/arm/boot/dts/zynq-7000.dtsi                   |  71 +--
 arch/arm/boot/dts/zynq-zc702.dts                   |   4 -
 arch/arm/mach-zynq/slcr.c                          |   2 +-
 drivers/clk/Makefile                               |   2 +-
 drivers/clk/clk-zynq.c                             | 378 ---------------
 drivers/clk/zynq/Makefile                          |   3 +
 drivers/clk/zynq/clkc.c                            | 533 +++++++++++++++++++++
 drivers/clk/zynq/pll.c                             | 235 +++++++++
 drivers/clocksource/cadence_ttc_timer.c            |  23 +-
 drivers/tty/serial/xilinx_uartps.c                 | 115 +++--
 include/linux/clk/zynq.h                           |   8 +-
 12 files changed, 974 insertions(+), 527 deletions(-)
 delete mode 100644 drivers/clk/clk-zynq.c
 create mode 100644 drivers/clk/zynq/Makefile
 create mode 100644 drivers/clk/zynq/clkc.c
 create mode 100644 drivers/clk/zynq/pll.c

-- 
1.8.2.3

[PATCH v2 1/5] tty: xuartps: Remove suspend/resume functions

[Soren Brinkmann]

Currently Zynq does not support suspend/resume.
The driver callbacks are never used or tested, broken and using the old
PM interface.

Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: linux-serial at vger.kernel.org
---
 drivers/tty/serial/xilinx_uartps.c | 30 ------------------------------
 1 file changed, 30 deletions(-)

diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
index 4e5c778..b5f655d 100644
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c
@@ -1006,34 +1006,6 @@ static int xuartps_remove(struct platform_device *pdev)
 	return rc;
 }
 
-/**
- * xuartps_suspend - suspend event
- * @pdev: Pointer to the platform device structure
- * @state: State of the device
- *
- * Returns 0
- **/
-static int xuartps_suspend(struct platform_device *pdev, pm_message_t state)
-{
-	/* Call the API provided in serial_core.c file which handles
-	 * the suspend.
-	 */
-	uart_suspend_port(&xuartps_uart_driver, &xuartps_port[pdev->id]);
-	return 0;
-}
-
-/**
- * xuartps_resume - Resume after a previous suspend
- * @pdev: Pointer to the platform device structure
- *
- * Returns 0
- **/
-static int xuartps_resume(struct platform_device *pdev)
-{
-	uart_resume_port(&xuartps_uart_driver, &xuartps_port[pdev->id]);
-	return 0;
-}
-
 /* Match table for of_platform binding */
 static struct of_device_id xuartps_of_match[] = {
 	{ .compatible = "xlnx,xuartps", },
@@ -1044,8 +1016,6 @@ MODULE_DEVICE_TABLE(of, xuartps_of_match);
 static struct platform_driver xuartps_platform_driver = {
 	.probe   = xuartps_probe,		/* Probe method */
 	.remove  = xuartps_remove,		/* Detach method */
-	.suspend = xuartps_suspend,		/* Suspend */
-	.resume  = xuartps_resume,		/* Resume after a suspend */
 	.driver  = {
 		.owner = THIS_MODULE,
 		.name = XUARTPS_NAME,		/* Driver name */
-- 
1.8.2.3

[PATCH v2 1/5] tty: xuartps: Remove suspend/resume functions

[Michal Simek]

Hi Greg,

can you please add this patch to your tree?
It is unrelated to clk changes which Soren sent.

Thanks,
Michal

On 05/13/2013 07:46 PM, Soren Brinkmann wrote:
> Currently Zynq does not support suspend/resume.
> The driver callbacks are never used or tested, broken and using the old
> PM interface.
> 
> Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Cc: Jiri Slaby <jslaby@suse.cz>
> Cc: linux-serial at vger.kernel.org
> ---
>  drivers/tty/serial/xilinx_uartps.c | 30 ------------------------------
>  1 file changed, 30 deletions(-)
> 
> diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
> index 4e5c778..b5f655d 100644
> --- a/drivers/tty/serial/xilinx_uartps.c
> +++ b/drivers/tty/serial/xilinx_uartps.c
> @@ -1006,34 +1006,6 @@ static int xuartps_remove(struct platform_device *pdev)
>  	return rc;
>  }
>  
> -/**
> - * xuartps_suspend - suspend event
> - * @pdev: Pointer to the platform device structure
> - * @state: State of the device
> - *
> - * Returns 0
> - **/
> -static int xuartps_suspend(struct platform_device *pdev, pm_message_t state)
> -{
> -	/* Call the API provided in serial_core.c file which handles
> -	 * the suspend.
> -	 */
> -	uart_suspend_port(&xuartps_uart_driver, &xuartps_port[pdev->id]);
> -	return 0;
> -}
> -
> -/**
> - * xuartps_resume - Resume after a previous suspend
> - * @pdev: Pointer to the platform device structure
> - *
> - * Returns 0
> - **/
> -static int xuartps_resume(struct platform_device *pdev)
> -{
> -	uart_resume_port(&xuartps_uart_driver, &xuartps_port[pdev->id]);
> -	return 0;
> -}
> -
>  /* Match table for of_platform binding */
>  static struct of_device_id xuartps_of_match[] = {
>  	{ .compatible = "xlnx,xuartps", },
> @@ -1044,8 +1016,6 @@ MODULE_DEVICE_TABLE(of, xuartps_of_match);
>  static struct platform_driver xuartps_platform_driver = {
>  	.probe   = xuartps_probe,		/* Probe method */
>  	.remove  = xuartps_remove,		/* Detach method */
> -	.suspend = xuartps_suspend,		/* Suspend */
> -	.resume  = xuartps_resume,		/* Resume after a suspend */
>  	.driver  = {
>  		.owner = THIS_MODULE,
>  		.name = XUARTPS_NAME,		/* Driver name */
> 


-- 
Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel - Microblaze cpu - http://www.monstr.eu/fdt/
Maintainer of Linux kernel - Xilinx Zynq ARM architecture
Microblaze U-BOOT custodian and responsible for u-boot arm zynq platform


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[PATCH v2 1/5] tty: xuartps: Remove suspend/resume functions

[Greg Kroah-Hartman]

On Fri, May 17, 2013 at 02:09:38PM +0200, Michal Simek wrote:
> Hi Greg,
> 
> can you please add this patch to your tree?
> It is unrelated to clk changes which Soren sent.

Ok, will do.

greg k-h

[PATCH v2 2/5] clk: zynq: Factor out PLL driver

[Soren Brinkmann]

Refactor the PLL driver so it works with the clock controller driver.

Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
---
 drivers/clk/zynq/pll.c | 235 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 235 insertions(+)
 create mode 100644 drivers/clk/zynq/pll.c

diff --git a/drivers/clk/zynq/pll.c b/drivers/clk/zynq/pll.c
new file mode 100644
index 0000000..47e307c
--- /dev/null
+++ b/drivers/clk/zynq/pll.c
@@ -0,0 +1,235 @@
+/*
+ * Zynq PLL driver
+ *
+ *  Copyright (C) 2013 Xilinx
+ *
+ *  S?ren Brinkmann <soren.brinkmann@xilinx.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License v2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+#include <linux/clk/zynq.h>
+#include <linux/clk-provider.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+
+/**
+ * struct zynq_pll
+ * @hw:		Handle between common and hardware-specific interfaces
+ * @pll_ctrl:	PLL control register
+ * @pll_status:	PLL status register
+ * @lock:	Register lock
+ * @lockbit:	Indicates the associated PLL_LOCKED bit in the PLL status
+ *		register.
+ */
+struct zynq_pll {
+	struct clk_hw	hw;
+	void __iomem	*pll_ctrl;
+	void __iomem	*pll_status;
+	spinlock_t	*lock;
+	u8		lockbit;
+};
+#define to_zynq_pll(_hw)	container_of(_hw, struct zynq_pll, hw)
+
+/* Register bitfield defines */
+#define PLLCTRL_FBDIV_MASK	0x7f000
+#define PLLCTRL_FBDIV_SHIFT	12
+#define PLLCTRL_BPQUAL_MASK	(1 << 3)
+#define PLLCTRL_PWRDWN_MASK	2
+#define PLLCTRL_PWRDWN_SHIFT	1
+#define PLLCTRL_RESET_MASK	1
+#define PLLCTRL_RESET_SHIFT	0
+
+/**
+ * zynq_pll_round_rate() - Round a clock frequency
+ * @hw:		Handle between common and hardware-specific interfaces
+ * @rate:	Desired clock frequency
+ * @prate:	Clock frequency of parent clock
+ * Returns frequency closest to @rate the hardware can generate.
+ */
+static long zynq_pll_round_rate(struct clk_hw *hw, unsigned long rate,
+		unsigned long *prate)
+{
+	u32 fbdiv;
+
+	fbdiv = DIV_ROUND_CLOSEST(rate, *prate);
+	if (fbdiv < 13)
+		fbdiv = 13;
+	else if (fbdiv > 66)
+		fbdiv = 66;
+
+	return *prate * fbdiv;
+}
+
+/**
+ * zynq_pll_recalc_rate() - Recalculate clock frequency
+ * @hw:			Handle between common and hardware-specific interfaces
+ * @parent_rate:	Clock frequency of parent clock
+ * Returns current clock frequency.
+ */
+static unsigned long zynq_pll_recalc_rate(struct clk_hw *hw,
+		unsigned long parent_rate)
+{
+	struct zynq_pll *clk = to_zynq_pll(hw);
+	u32 fbdiv;
+
+	/*
+	 * makes probably sense to redundantly save fbdiv in the struct
+	 * zynq_pll to save the IO access.
+	 */
+	fbdiv = (readl(clk->pll_ctrl) & PLLCTRL_FBDIV_MASK) >>
+			PLLCTRL_FBDIV_SHIFT;
+
+	return parent_rate * fbdiv;
+}
+
+/**
+ * zynq_pll_is_enabled - Check if a clock is enabled
+ * @hw:		Handle between common and hardware-specific interfaces
+ * Returns 1 if the clock is enabled, 0 otherwise.
+ *
+ * Not sure this is a good idea, but since disabled means bypassed for
+ * this clock implementation we say we are always enabled.
+ */
+static int zynq_pll_is_enabled(struct clk_hw *hw)
+{
+	unsigned long flags = 0;
+	u32 reg;
+	struct zynq_pll *clk = to_zynq_pll(hw);
+
+	spin_lock_irqsave(clk->lock, flags);
+
+	reg = readl(clk->pll_ctrl);
+
+	spin_unlock_irqrestore(clk->lock, flags);
+
+	return !(reg & (PLLCTRL_RESET_MASK | PLLCTRL_PWRDWN_MASK));
+}
+
+/**
+ * zynq_pll_enable - Enable clock
+ * @hw:		Handle between common and hardware-specific interfaces
+ * Returns 0 on success
+ */
+static int zynq_pll_enable(struct clk_hw *hw)
+{
+	unsigned long flags = 0;
+	u32 reg;
+	struct zynq_pll *clk = to_zynq_pll(hw);
+
+	if (zynq_pll_is_enabled(hw))
+		return 0;
+
+	pr_info("PLL: enable\n");
+
+	/* Power up PLL and wait for lock */
+	spin_lock_irqsave(clk->lock, flags);
+
+	reg = readl(clk->pll_ctrl);
+	reg &= ~(PLLCTRL_RESET_MASK | PLLCTRL_PWRDWN_MASK);
+	writel(reg, clk->pll_ctrl);
+	while (!(readl(clk->pll_status) & (1 << clk->lockbit)))
+		;
+
+	spin_unlock_irqrestore(clk->lock, flags);
+
+	return 0;
+}
+
+/**
+ * zynq_pll_disable - Disable clock
+ * @hw:		Handle between common and hardware-specific interfaces
+ * Returns 0 on success
+ */
+static void zynq_pll_disable(struct clk_hw *hw)
+{
+	unsigned long flags = 0;
+	u32 reg;
+	struct zynq_pll *clk = to_zynq_pll(hw);
+
+	if (!zynq_pll_is_enabled(hw))
+		return;
+
+	pr_info("PLL: shutdown\n");
+
+	/* shut down PLL */
+	spin_lock_irqsave(clk->lock, flags);
+
+	reg = readl(clk->pll_ctrl);
+	reg |= PLLCTRL_RESET_MASK | PLLCTRL_PWRDWN_MASK;
+	writel(reg, clk->pll_ctrl);
+
+	spin_unlock_irqrestore(clk->lock, flags);
+}
+
+static const struct clk_ops zynq_pll_ops = {
+	.enable = zynq_pll_enable,
+	.disable = zynq_pll_disable,
+	.is_enabled = zynq_pll_is_enabled,
+	.round_rate = zynq_pll_round_rate,
+	.recalc_rate = zynq_pll_recalc_rate
+};
+
+/**
+ * clk_register_zynq_pll() - Register PLL with the clock framework
+ * @np	Pointer to the DT device node
+ */
+struct clk *clk_register_zynq_pll(const char *name, const char *parent,
+		void __iomem *pll_ctrl, void __iomem *pll_status, u8 lock_index,
+		spinlock_t *lock)
+{
+	struct zynq_pll *pll;
+	struct clk *clk;
+	u32 reg;
+	const char *parent_arr[1] = {parent};
+	unsigned long flags = 0;
+	struct clk_init_data initd = {
+		.name = name,
+		.parent_names = parent_arr,
+		.ops = &zynq_pll_ops,
+		.num_parents = 1,
+		.flags = 0
+	};
+
+	pll = kmalloc(sizeof(*pll), GFP_KERNEL);
+	if (!pll) {
+		pr_err("%s: Could not allocate Zynq PLL clk.\n", __func__);
+		return ERR_PTR(-ENOMEM);
+	}
+
+	/* Populate the struct */
+	pll->hw.init = &initd;
+	pll->pll_ctrl = pll_ctrl;
+	pll->pll_status = pll_status;
+	pll->lockbit = lock_index;
+	pll->lock = lock;
+
+	spin_lock_irqsave(pll->lock, flags);
+
+	reg = readl(pll->pll_ctrl);
+	reg &= ~PLLCTRL_BPQUAL_MASK;
+	writel(reg, pll->pll_ctrl);
+
+	spin_unlock_irqrestore(pll->lock, flags);
+
+	clk = clk_register(NULL, &pll->hw);
+	if (WARN_ON(IS_ERR(clk)))
+		goto free_pll;
+
+	return clk;
+
+free_pll:
+	kfree(pll);
+
+	return clk;
+}
-- 
1.8.2.3

[PATCH v2 3/5] clk: zynq: Add clock controller driver

[Soren Brinkmann]

Add a clock controller driver and documentation.

Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Rob Landley <rob@landley.net>
Cc: devicetree-discuss at lists.ozlabs.org
Cc: linux-doc at vger.kernel.org
---
 .../devicetree/bindings/clock/zynq-7000.txt        |  98 ++++
 drivers/clk/zynq/clkc.c                            | 533 +++++++++++++++++++++
 2 files changed, 631 insertions(+)
 create mode 100644 drivers/clk/zynq/clkc.c

diff --git a/Documentation/devicetree/bindings/clock/zynq-7000.txt b/Documentation/devicetree/bindings/clock/zynq-7000.txt
index 23ae1db..30bfca9 100644
--- a/Documentation/devicetree/bindings/clock/zynq-7000.txt
+++ b/Documentation/devicetree/bindings/clock/zynq-7000.txt
@@ -6,6 +6,104 @@ The purpose of this document is to document their usage.
 See clock_bindings.txt for more information on the generic clock bindings.
 See Chapter 25 of Zynq TRM for more information about Zynq clocks.
 
+== Clock Controller ==
+The clock controller is a logical abstration of Zynq's clock tree. It reads
+required input clock frequencies from the devictree and acts as clock provider
+for all clock consumers of PS clocks.
+
+Required properties:
+ - #clock-cells : Must be 1
+ - compatible : "xlnx,ps7-clkc"
+ - ps-clk-frequency : Frequency of the oscillator providing ps_clk in HZ
+		      (usually 33 MHz oscillators are used for Zynq platforms)
+ - clock-output-names : List of strings used to name the clock outputs. Shall be
+			a list of the outputs given below.
+
+Optional properties:
+ - clocks : as described in the clock bindings
+ - clock-names : as described in the clock bindings
+
+Clock inputs:
+The following strings are optional parameters to the 'clock-names' property in
+order to provide an optional (E)MIO clock source.
+ - swdt_ext_clk
+ - gem0_emio_clk
+ - gem1_emio_clk
+ - mio_clk_XX		# with XX = 00..53
+...
+
+Clock outputs:
+ 0:  armpll
+ 1:  ddrpll
+ 2:  iopll
+ 3:  cpu_6or4x
+ 4:  cpu_3or2x
+ 5:  cpu_2x
+ 6:  cpu_1x
+ 7:  ddr2x
+ 8:  ddr3x
+ 9:  dci
+ 10: lqspi
+ 11: smc
+ 12: pcap
+ 13: gem0
+ 14: gem1
+ 15: fclk0
+ 16: fclk1
+ 17: fclk2
+ 18: fclk3
+ 19: can0
+ 20: can1
+ 21: sdio0
+ 22: sdio1
+ 23: uart0
+ 24: uart1
+ 25: spi0
+ 26: spi1
+ 27: dma
+ 28: usb0_aper
+ 29: usb1_aper
+ 30: gem0_aper
+ 31: gem1_aper
+ 32: sdio0_aper
+ 33: sdio1_aper
+ 34: spi0_aper
+ 35: spi1_aper
+ 36: can0_aper
+ 37: can1_aper
+ 38: i2c0_aper
+ 39: i2c1_aper
+ 40: uart0_aper
+ 41: uart1_aper
+ 42: gpio_aper
+ 43: lqspi_aper
+ 44: smc_aper
+ 45: swdt
+ 46: dbg_trc
+ 47: dbg_apb
+
+Example:
+	clkc: clkc {
+                #clock-cells = <1>;
+                compatible = "xlnx,ps7-clkc";
+                ps-clk-frequency = <33333333>;
+		clock-output-names = "armpll", "ddrpll", "iopll", "cpu_6or4x",
+				"cpu_3or2x", "cpu_2x", "cpu_1x", "ddr2x", "ddr3x",
+				"dci", "lqspi", "smc", "pcap", "gem0", "gem1",
+				"fclk0", "fclk1", "fclk2", "fclk3", "can0", "can1",
+				"sdio0", "sdio1", "uart0", "uart1", "spi0", "spi1",
+				"dma", "usb0_aper", "usb1_aper", "gem0_aper",
+				"gem1_aper", "sdio0_aper", "sdio1_aper",
+				"spi0_aper", "spi1_aper", "can0_aper", "can1_aper",
+				"i2c0_aper", "i2c1_aper", "uart0_aper", "uart1_aper",
+				"gpio_aper", "lqspi_aper", "smc_aper", "swdt",
+				"dbg_trc", "dbg_apb";
+                # optional props
+		clocks = <&clkc 16>, <&clk_foo>;
+		clock-names = "gem1_emio_clk", "can_mio_clk_23";
+        };
+
+
 == PLLs ==
 
 Used to describe the ARM_PLL, DDR_PLL, and IO_PLL.
diff --git a/drivers/clk/zynq/clkc.c b/drivers/clk/zynq/clkc.c
new file mode 100644
index 0000000..5c205b6
--- /dev/null
+++ b/drivers/clk/zynq/clkc.c
@@ -0,0 +1,533 @@
+/*
+ * Zynq clock controller
+ *
+ *  Copyright (C) 2012 - 2013 Xilinx
+ *
+ *  S?ren Brinkmann <soren.brinkmann@xilinx.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License v2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/clk/zynq.h>
+#include <linux/clk-provider.h>
+#include <linux/of.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/io.h>
+
+static void __iomem *zynq_slcr_base_priv;
+
+#define SLCR_ARMPLL_CTRL		(zynq_slcr_base_priv + 0x100)
+#define SLCR_DDRPLL_CTRL		(zynq_slcr_base_priv + 0x104)
+#define SLCR_IOPLL_CTRL			(zynq_slcr_base_priv + 0x108)
+#define SLCR_PLL_STATUS			(zynq_slcr_base_priv + 0x10c)
+#define SLCR_ARM_CLK_CTRL		(zynq_slcr_base_priv + 0x120)
+#define SLCR_DDR_CLK_CTRL		(zynq_slcr_base_priv + 0x124)
+#define SLCR_DCI_CLK_CTRL		(zynq_slcr_base_priv + 0x128)
+#define SLCR_APER_CLK_CTRL		(zynq_slcr_base_priv + 0x12c)
+#define SLCR_GEM0_CLK_CTRL		(zynq_slcr_base_priv + 0x140)
+#define SLCR_GEM1_CLK_CTRL		(zynq_slcr_base_priv + 0x144)
+#define SLCR_SMC_CLK_CTRL		(zynq_slcr_base_priv + 0x148)
+#define SLCR_LQSPI_CLK_CTRL		(zynq_slcr_base_priv + 0x14c)
+#define SLCR_SDIO_CLK_CTRL		(zynq_slcr_base_priv + 0x150)
+#define SLCR_UART_CLK_CTRL		(zynq_slcr_base_priv + 0x154)
+#define SLCR_SPI_CLK_CTRL		(zynq_slcr_base_priv + 0x158)
+#define SLCR_CAN_CLK_CTRL		(zynq_slcr_base_priv + 0x15c)
+#define SLCR_CAN_MIOCLK_CTRL		(zynq_slcr_base_priv + 0x160)
+#define SLCR_DBG_CLK_CTRL		(zynq_slcr_base_priv + 0x164)
+#define SLCR_PCAP_CLK_CTRL		(zynq_slcr_base_priv + 0x168)
+#define SLCR_FPGA0_CLK_CTRL		(zynq_slcr_base_priv + 0x170)
+#define SLCR_621_TRUE			(zynq_slcr_base_priv + 0x1c4)
+#define SLCR_SWDT_CLK_SEL		(zynq_slcr_base_priv + 0x304)
+
+#define NUM_MIO_PINS	54
+
+enum zynq_clk {
+	armpll, ddrpll, iopll,
+	cpu_6or4x, cpu_3or2x, cpu_2x, cpu_1x,
+	ddr2x, ddr3x, dci,
+	lqspi, smc, pcap, gem0, gem1, fclk0, fclk1, fclk2, fclk3, can0, can1,
+	sdio0, sdio1, uart0, uart1, spi0, spi1, dma,
+	usb0_aper, usb1_aper, gem0_aper, gem1_aper,
+	sdio0_aper, sdio1_aper, spi0_aper, spi1_aper, can0_aper, can1_aper,
+	i2c0_aper, i2c1_aper, uart0_aper, uart1_aper, gpio_aper, lqspi_aper,
+	smc_aper, swdt, dbg_trc, dbg_apb, clk_max};
+
+static struct clk *ps_clk;
+static struct clk *clks[clk_max];
+static struct clk_onecell_data clk_data;
+
+static DEFINE_SPINLOCK(armpll_lock);
+static DEFINE_SPINLOCK(ddrpll_lock);
+static DEFINE_SPINLOCK(iopll_lock);
+static DEFINE_SPINLOCK(armclk_lock);
+static DEFINE_SPINLOCK(ddrclk_lock);
+static DEFINE_SPINLOCK(dciclk_lock);
+static DEFINE_SPINLOCK(gem0clk_lock);
+static DEFINE_SPINLOCK(gem1clk_lock);
+static DEFINE_SPINLOCK(canclk_lock);
+static DEFINE_SPINLOCK(canmioclk_lock);
+static DEFINE_SPINLOCK(dbgclk_lock);
+static DEFINE_SPINLOCK(aperclk_lock);
+
+static const char dummy_nm[] __initconst = "dummy_name";
+
+static const char *armpll_parents[] __initdata = {"armpll_int", "ps_clk"};
+static const char *ddrpll_parents[] __initdata = {"ddrpll_int", "ps_clk"};
+static const char *iopll_parents[] __initdata = {"iopll_int", "ps_clk"};
+static const char *gem0_mux_parents[] __initdata = {"gem0_div1", dummy_nm};
+static const char *gem1_mux_parents[] __initdata = {"gem1_div1", dummy_nm};
+static const char *can0_mio_mux2_parents[] __initdata = {"can0_gate",
+	"can0_mio_mux"};
+static const char *can1_mio_mux2_parents[] __initdata = {"can1_gate",
+	"can1_mio_mux"};
+static const char *dbg_emio_mux_parents[] __initdata = {"dbg_div",
+	dummy_nm};
+
+static const char *dbgtrc_emio_input_names[] __initdata = {"trace_emio_clk"};
+static const char *gem0_emio_input_names[] __initdata = {"gem0_emio_clk"};
+static const char *gem1_emio_input_names[] __initdata = {"gem1_emio_clk"};
+static const char *swdt_ext_clk_input_names[] __initdata = {"swdt_ext_clk"};
+
+static void __init zynq_clk_register_fclk(enum zynq_clk fclk,
+		const char *clk_name, void __iomem *fclk_ctrl_reg,
+		const char **parents)
+{
+	struct clk *clk;
+	char *mux_name;
+	char *div0_name;
+	char *div1_name;
+	spinlock_t *fclk_lock;
+	spinlock_t *fclk_gate_lock;
+	void __iomem *fclk_gate_reg = fclk_ctrl_reg + 8;
+
+	fclk_lock = kmalloc(sizeof(*fclk_lock), GFP_KERNEL);
+	if (!fclk_lock)
+		goto err;
+	fclk_gate_lock = kmalloc(sizeof(*fclk_gate_lock), GFP_KERNEL);
+	if (!fclk_gate_lock)
+		goto err;
+	spin_lock_init(fclk_lock);
+	spin_lock_init(fclk_gate_lock);
+
+	mux_name = kasprintf(GFP_KERNEL, "%s_mux", clk_name);
+	div0_name = kasprintf(GFP_KERNEL, "%s_div0", clk_name);
+	div1_name = kasprintf(GFP_KERNEL, "%s_div1", clk_name);
+
+	clk = clk_register_mux(NULL, mux_name, parents, 4, 0,
+			fclk_ctrl_reg, 4, 2, 0, fclk_lock);
+
+	clk = clk_register_divider(NULL, div0_name, mux_name,
+			0, fclk_ctrl_reg, 8, 6, CLK_DIVIDER_ONE_BASED |
+			CLK_DIVIDER_ALLOW_ZERO, fclk_lock);
+
+	clk = clk_register_divider(NULL, div1_name, div0_name,
+			CLK_SET_RATE_PARENT, fclk_ctrl_reg, 20, 6,
+			CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO,
+			fclk_lock);
+
+	clks[fclk] = clk_register_gate(NULL, clk_name,
+			div1_name, CLK_SET_RATE_PARENT, fclk_gate_reg,
+			0, CLK_GATE_SET_TO_DISABLE, fclk_gate_lock);
+	kfree(mux_name);
+	kfree(div0_name);
+	kfree(div1_name);
+
+	return;
+
+err:
+	clks[fclk] = ERR_PTR(-ENOMEM);
+}
+
+static void __init zynq_clk_register_periph_clk(enum zynq_clk clk0,
+		enum zynq_clk clk1, const char *clk_name0,
+		const char *clk_name1, void __iomem *clk_ctrl,
+		const char **parents, unsigned int two_gates)
+{
+	struct clk *clk;
+	char *mux_name;
+	char *div_name;
+	spinlock_t *lock;
+
+	lock = kmalloc(sizeof(*lock), GFP_KERNEL);
+	if (!lock)
+		goto err;
+	spin_lock_init(lock);
+
+	mux_name = kasprintf(GFP_KERNEL, "%s_mux", clk_name0);
+	div_name = kasprintf(GFP_KERNEL, "%s_div", clk_name0);
+
+	clk = clk_register_mux(NULL, mux_name, parents, 4, 0,
+			clk_ctrl, 4, 2, 0, lock);
+
+	clk = clk_register_divider(NULL, div_name, mux_name, 0, clk_ctrl, 8, 6,
+			CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO, lock);
+
+	clks[clk0] = clk_register_gate(NULL, clk_name0, div_name,
+			CLK_SET_RATE_PARENT, clk_ctrl, 0, 0, lock);
+	if (two_gates)
+		clks[clk1] = clk_register_gate(NULL, clk_name1, div_name,
+				CLK_SET_RATE_PARENT, clk_ctrl, 1, 0, lock);
+
+	kfree(mux_name);
+	kfree(div_name);
+
+	return;
+
+err:
+	clks[clk0] = ERR_PTR(-ENOMEM);
+	if (two_gates)
+		clks[clk1] = ERR_PTR(-ENOMEM);
+}
+
+static void __init zynq_clk_setup(struct device_node *np)
+{
+	int i;
+	u32 tmp;
+	int ret;
+	struct clk *clk;
+	char *clk_name;
+	const char *clk_output_name[clk_max];
+	const char *cpu_parents[4];
+	const char *periph_parents[4];
+	const char *swdt_ext_clk_mux_parents[2];
+	const char *can_mio_mux_parents[NUM_MIO_PINS];
+
+	pr_info("Zynq clock init\n");
+
+	/* get clock output names from DT */
+	for (i = 0; i < clk_max; i++) {
+		if (of_property_read_string_index(np, "clock-output-names",
+				  i, &clk_output_name[i])) {
+			pr_err("%s: clock output name not in DT\n", __func__);
+			BUG();
+		}
+	}
+	cpu_parents[0] = clk_output_name[armpll];
+	cpu_parents[1] = clk_output_name[armpll];
+	cpu_parents[2] = clk_output_name[ddrpll];
+	cpu_parents[3] = clk_output_name[iopll];
+	periph_parents[0] = clk_output_name[iopll];
+	periph_parents[1] = clk_output_name[iopll];
+	periph_parents[2] = clk_output_name[armpll];
+	periph_parents[3] = clk_output_name[ddrpll];
+
+	/* ps_clk */
+	ret = of_property_read_u32(np, "ps-clk-frequency", &tmp);
+	if (ret) {
+		pr_warn("ps_clk frequency not specified, using 33 MHz.\n");
+		tmp = 33333333;
+	}
+	ps_clk = clk_register_fixed_rate(NULL, "ps_clk", NULL, CLK_IS_ROOT,
+			tmp);
+
+	/* PLLs */
+	clk = clk_register_zynq_pll("armpll_int", "ps_clk", SLCR_ARMPLL_CTRL,
+			SLCR_PLL_STATUS, 0, &armpll_lock);
+	clks[armpll] = clk_register_mux(NULL, clk_output_name[armpll],
+			armpll_parents, 2, 0, SLCR_ARMPLL_CTRL, 4, 1, 0,
+			&armpll_lock);
+
+	clk = clk_register_zynq_pll("ddrpll_int", "ps_clk", SLCR_DDRPLL_CTRL,
+			SLCR_PLL_STATUS, 1, &ddrpll_lock);
+	clks[ddrpll] = clk_register_mux(NULL, clk_output_name[ddrpll],
+			ddrpll_parents, 2, 0, SLCR_DDRPLL_CTRL, 4, 1, 0,
+			&ddrpll_lock);
+
+	clk = clk_register_zynq_pll("iopll_int", "ps_clk", SLCR_IOPLL_CTRL,
+			SLCR_PLL_STATUS, 2, &iopll_lock);
+	clks[iopll] = clk_register_mux(NULL, clk_output_name[iopll],
+			iopll_parents, 2, 0, SLCR_IOPLL_CTRL, 4, 1, 0,
+			&iopll_lock);
+
+	/* CPU clocks */
+	tmp = readl(SLCR_621_TRUE) & 1;
+	clk = clk_register_mux(NULL, "cpu_mux", cpu_parents, 4, 0,
+			SLCR_ARM_CLK_CTRL, 4, 2, 0, &armclk_lock);
+	clk = clk_register_divider(NULL, "cpu_div", "cpu_mux", 0,
+			SLCR_ARM_CLK_CTRL, 8, 6, CLK_DIVIDER_ONE_BASED |
+			CLK_DIVIDER_ALLOW_ZERO, &armclk_lock);
+
+	clks[cpu_6or4x] = clk_register_gate(NULL, clk_output_name[cpu_6or4x],
+			"cpu_div", CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED,
+			SLCR_ARM_CLK_CTRL, 24, 0, &armclk_lock);
+
+	clk = clk_register_fixed_factor(NULL, "cpu_3or2x_div", "cpu_div", 0,
+			1, 2);
+	clks[cpu_3or2x] = clk_register_gate(NULL, clk_output_name[cpu_3or2x],
+			"cpu_3or2x_div", CLK_IGNORE_UNUSED,
+			SLCR_ARM_CLK_CTRL, 25, 0, &armclk_lock);
+
+	clk = clk_register_fixed_factor(NULL, "cpu_2x_div", "cpu_div", 0, 1,
+			2 + tmp);
+	clks[cpu_2x] = clk_register_gate(NULL, clk_output_name[cpu_2x],
+			"cpu_2x_div", CLK_IGNORE_UNUSED, SLCR_ARM_CLK_CTRL,
+			26, 0, &armclk_lock);
+
+	clk = clk_register_fixed_factor(NULL, "cpu_1x_div", "cpu_div", 0, 1,
+			4 + 2 * tmp);
+	clks[cpu_1x] = clk_register_gate(NULL, clk_output_name[cpu_1x],
+			"cpu_1x_div", CLK_IGNORE_UNUSED, SLCR_ARM_CLK_CTRL, 27,
+			0, &armclk_lock);
+
+	/* Timers */
+	swdt_ext_clk_mux_parents[0] = clk_output_name[cpu_1x];
+	for (i = 0; i < ARRAY_SIZE(swdt_ext_clk_input_names); i++) {
+		int idx = of_property_match_string(np, "clock-names",
+				swdt_ext_clk_input_names[i]);
+		if (idx >= 0)
+			swdt_ext_clk_mux_parents[i + 1] =
+				of_clk_get_parent_name(np, idx);
+		else
+			swdt_ext_clk_mux_parents[i + 1] = dummy_nm;
+	}
+	clks[swdt] = clk_register_mux(NULL, clk_output_name[swdt],
+			swdt_ext_clk_mux_parents, 2, CLK_SET_RATE_PARENT,
+			SLCR_SWDT_CLK_SEL, 0, 1, 0, &gem0clk_lock);
+
+	/* DDR clocks */
+	clk = clk_register_divider(NULL, "ddr2x_div", "ddrpll", 0,
+			SLCR_DDR_CLK_CTRL, 26, 6, CLK_DIVIDER_ONE_BASED |
+			CLK_DIVIDER_ALLOW_ZERO, &ddrclk_lock);
+	clks[ddr2x] = clk_register_gate(NULL, clk_output_name[ddr2x],
+			"ddr2x_div", 0, SLCR_DDR_CLK_CTRL, 1, 0, &ddrclk_lock);
+	clk_prepare_enable(clks[ddr2x]);
+	clk = clk_register_divider(NULL, "ddr3x_div", "ddrpll", 0,
+			SLCR_DDR_CLK_CTRL, 20, 6, CLK_DIVIDER_ONE_BASED |
+			CLK_DIVIDER_ALLOW_ZERO, &ddrclk_lock);
+	clks[ddr3x] = clk_register_gate(NULL, clk_output_name[ddr3x],
+			"ddr3x_div", 0, SLCR_DDR_CLK_CTRL, 0, 0, &ddrclk_lock);
+	clk_prepare_enable(clks[ddr3x]);
+
+	clk = clk_register_divider(NULL, "dci_div0", "ddrpll", 0,
+			SLCR_DCI_CLK_CTRL, 8, 6, CLK_DIVIDER_ONE_BASED |
+			CLK_DIVIDER_ALLOW_ZERO, &dciclk_lock);
+	clk = clk_register_divider(NULL, "dci_div1", "dci_div0",
+			CLK_SET_RATE_PARENT, SLCR_DCI_CLK_CTRL, 20, 6,
+			CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO,
+			&dciclk_lock);
+	clks[dci] = clk_register_gate(NULL, clk_output_name[dci], "dci_div1",
+			CLK_SET_RATE_PARENT, SLCR_DCI_CLK_CTRL, 0, 0,
+			&dciclk_lock);
+	clk_prepare_enable(clks[dci]);
+
+	/* Peripheral clocks */
+	for (i = fclk0; i <= fclk3; i++)
+		zynq_clk_register_fclk(i, clk_output_name[i],
+				SLCR_FPGA0_CLK_CTRL + 0x10 * (i - fclk0),
+				periph_parents);
+
+	zynq_clk_register_periph_clk(lqspi, 0, clk_output_name[lqspi], NULL,
+			SLCR_LQSPI_CLK_CTRL, periph_parents, 0);
+
+	zynq_clk_register_periph_clk(smc, 0, clk_output_name[smc], NULL,
+			SLCR_SMC_CLK_CTRL, periph_parents, 0);
+
+	zynq_clk_register_periph_clk(pcap, 0, clk_output_name[pcap], NULL,
+			SLCR_PCAP_CLK_CTRL, periph_parents, 0);
+
+	zynq_clk_register_periph_clk(sdio0, sdio1, clk_output_name[sdio0],
+			clk_output_name[sdio1], SLCR_SDIO_CLK_CTRL,
+			periph_parents, 1);
+
+	zynq_clk_register_periph_clk(uart0, uart1, clk_output_name[uart0],
+			clk_output_name[uart1], SLCR_UART_CLK_CTRL,
+			periph_parents, 1);
+
+	zynq_clk_register_periph_clk(spi0, spi1, clk_output_name[spi0],
+			clk_output_name[spi1], SLCR_SPI_CLK_CTRL,
+			periph_parents, 1);
+
+	for (i = 0; i < ARRAY_SIZE(gem0_emio_input_names); i++) {
+		int idx = of_property_match_string(np, "clock-names",
+				gem0_emio_input_names[i]);
+		if (idx >= 0)
+			gem0_mux_parents[i + 1] = of_clk_get_parent_name(np,
+					idx);
+	}
+	clk = clk_register_mux(NULL, "gem0_mux", periph_parents, 4, 0,
+			SLCR_GEM0_CLK_CTRL, 4, 2, 0, &gem0clk_lock);
+	clk = clk_register_divider(NULL, "gem0_div0", "gem0_mux", 0,
+			SLCR_GEM0_CLK_CTRL, 8, 6, CLK_DIVIDER_ONE_BASED |
+			CLK_DIVIDER_ALLOW_ZERO, &gem0clk_lock);
+	clk = clk_register_divider(NULL, "gem0_div1", "gem0_div0",
+			CLK_SET_RATE_PARENT, SLCR_GEM0_CLK_CTRL, 20, 6,
+			CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO,
+			&gem0clk_lock);
+	clk = clk_register_mux(NULL, "gem0_emio_mux", gem0_mux_parents, 2, 0,
+			SLCR_GEM0_CLK_CTRL, 6, 1, 0, &gem0clk_lock);
+	clks[gem0] = clk_register_gate(NULL, clk_output_name[gem0],
+			"gem0_emio_mux", CLK_SET_RATE_PARENT,
+			SLCR_GEM0_CLK_CTRL, 0, 0, &gem0clk_lock);
+
+	for (i = 0; i < ARRAY_SIZE(gem1_emio_input_names); i++) {
+		int idx = of_property_match_string(np, "clock-names",
+				gem1_emio_input_names[i]);
+		if (idx >= 0)
+			gem1_mux_parents[i + 1] = of_clk_get_parent_name(np,
+					idx);
+	}
+	clk = clk_register_mux(NULL, "gem1_mux", periph_parents, 4, 0,
+			SLCR_GEM1_CLK_CTRL, 4, 2, 0, &gem1clk_lock);
+	clk = clk_register_divider(NULL, "gem1_div0", "gem1_mux", 0,
+			SLCR_GEM1_CLK_CTRL, 8, 6, CLK_DIVIDER_ONE_BASED |
+			CLK_DIVIDER_ALLOW_ZERO, &gem1clk_lock);
+	clk = clk_register_divider(NULL, "gem1_div1", "gem1_div0",
+			CLK_SET_RATE_PARENT, SLCR_GEM1_CLK_CTRL, 20, 6,
+			CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO,
+			&gem1clk_lock);
+	clk = clk_register_mux(NULL, "gem1_emio_mux", gem1_mux_parents, 2, 0,
+			SLCR_GEM1_CLK_CTRL, 6, 1, 0, &gem1clk_lock);
+	clks[gem1] = clk_register_gate(NULL, clk_output_name[gem1],
+			"gem1_emio_mux", CLK_SET_RATE_PARENT,
+			SLCR_GEM1_CLK_CTRL, 0, 0, &gem1clk_lock);
+
+	tmp = strlen("mio_clk_00x");
+	clk_name = kmalloc(tmp, GFP_KERNEL);
+	for (i = 0; i < NUM_MIO_PINS; i++) {
+		int idx;
+
+		snprintf(clk_name, tmp, "mio_clk_%2.2d", i);
+		idx = of_property_match_string(np, "clock-names", clk_name);
+		if (idx >= 0)
+			can_mio_mux_parents[i] = of_clk_get_parent_name(np,
+						idx);
+		else
+			can_mio_mux_parents[i] = dummy_nm;
+	}
+	kfree(clk_name);
+	clk = clk_register_mux(NULL, "can_mux", periph_parents, 4, 0,
+			SLCR_CAN_CLK_CTRL, 4, 2, 0, &canclk_lock);
+	clk = clk_register_divider(NULL, "can_div0", "can_mux", 0,
+			SLCR_CAN_CLK_CTRL, 8, 6, CLK_DIVIDER_ONE_BASED |
+			CLK_DIVIDER_ALLOW_ZERO, &canclk_lock);
+	clk = clk_register_divider(NULL, "can_div1", "can_div0",
+			CLK_SET_RATE_PARENT, SLCR_CAN_CLK_CTRL, 20, 6,
+			CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO,
+			&canclk_lock);
+	clk = clk_register_gate(NULL, "can0_gate", "can_div1",
+			CLK_SET_RATE_PARENT, SLCR_CAN_CLK_CTRL, 0, 0,
+			&canclk_lock);
+	clk = clk_register_gate(NULL, "can1_gate", "can_div1",
+			CLK_SET_RATE_PARENT, SLCR_CAN_CLK_CTRL, 1, 0,
+			&canclk_lock);
+	clk = clk_register_mux(NULL, "can0_mio_mux",
+			can_mio_mux_parents, 54, CLK_SET_RATE_PARENT,
+			SLCR_CAN_MIOCLK_CTRL, 0, 6, 0, &canmioclk_lock);
+	clk = clk_register_mux(NULL, "can1_mio_mux",
+			can_mio_mux_parents, 54, CLK_SET_RATE_PARENT,
+			SLCR_CAN_MIOCLK_CTRL, 16, 6, 0, &canmioclk_lock);
+	clks[can0] = clk_register_mux(NULL, clk_output_name[can0],
+			can0_mio_mux2_parents, 2, CLK_SET_RATE_PARENT,
+			SLCR_CAN_MIOCLK_CTRL, 6, 1, 0, &canmioclk_lock);
+	clks[can1] = clk_register_mux(NULL, clk_output_name[can1],
+			can1_mio_mux2_parents, 2, CLK_SET_RATE_PARENT,
+			SLCR_CAN_MIOCLK_CTRL, 22, 1, 0, &canmioclk_lock);
+
+	for (i = 0; i < ARRAY_SIZE(dbgtrc_emio_input_names); i++) {
+		int idx = of_property_match_string(np, "clock-names",
+				dbgtrc_emio_input_names[i]);
+		if (idx >= 0)
+			dbg_emio_mux_parents[i + 1] = of_clk_get_parent_name(np,
+					idx);
+	}
+	clk = clk_register_mux(NULL, "dbg_mux", periph_parents, 4, 0,
+			SLCR_DBG_CLK_CTRL, 4, 2, 0, &dbgclk_lock);
+	clk = clk_register_divider(NULL, "dbg_div", "dbg_mux", 0,
+			SLCR_DBG_CLK_CTRL, 8, 6, CLK_DIVIDER_ONE_BASED |
+			CLK_DIVIDER_ALLOW_ZERO, &dbgclk_lock);
+	clk = clk_register_mux(NULL, "dbg_emio_mux", dbg_emio_mux_parents, 2, 0,
+			SLCR_DBG_CLK_CTRL, 6, 1, 0, &dbgclk_lock);
+	clks[dbg_trc] = clk_register_gate(NULL, clk_output_name[dbg_trc],
+			"dbg_emio_mux", CLK_SET_RATE_PARENT, SLCR_DBG_CLK_CTRL,
+			0, 0, &dbgclk_lock);
+	clks[dbg_apb] = clk_register_gate(NULL, clk_output_name[dbg_apb],
+			clk_output_name[cpu_1x], 0, SLCR_DBG_CLK_CTRL, 1, 0,
+			&dbgclk_lock);
+
+	/* One gated clock for all APER clocks. */
+	clks[dma] = clk_register_gate(NULL, clk_output_name[dma],
+			clk_output_name[cpu_2x], 0, SLCR_APER_CLK_CTRL, 0, 0,
+			&aperclk_lock);
+	clks[usb0_aper] = clk_register_gate(NULL, clk_output_name[usb0_aper],
+			clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 2, 0,
+			&aperclk_lock);
+	clks[usb1_aper] = clk_register_gate(NULL, clk_output_name[usb1_aper],
+			clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 3, 0,
+			&aperclk_lock);
+	clks[gem0_aper] = clk_register_gate(NULL, clk_output_name[gem0_aper],
+			clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 6, 0,
+			&aperclk_lock);
+	clks[gem1_aper] = clk_register_gate(NULL, clk_output_name[gem1_aper],
+			clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 7, 0,
+			&aperclk_lock);
+	clks[sdio0_aper] = clk_register_gate(NULL, clk_output_name[sdio0_aper],
+			clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 10, 0,
+			&aperclk_lock);
+	clks[sdio1_aper] = clk_register_gate(NULL, clk_output_name[sdio1_aper],
+			clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 11, 0,
+			&aperclk_lock);
+	clks[spi0_aper] = clk_register_gate(NULL, clk_output_name[spi0_aper],
+			clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 14, 0,
+			&aperclk_lock);
+	clks[spi1_aper] = clk_register_gate(NULL, clk_output_name[spi1_aper],
+			clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 15, 0,
+			&aperclk_lock);
+	clks[can0_aper] = clk_register_gate(NULL, clk_output_name[can0_aper],
+			clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 16, 0,
+			&aperclk_lock);
+	clks[can1_aper] = clk_register_gate(NULL, clk_output_name[can1_aper],
+			clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 17, 0,
+			&aperclk_lock);
+	clks[i2c0_aper] = clk_register_gate(NULL, clk_output_name[i2c0_aper],
+			clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 18, 0,
+			&aperclk_lock);
+	clks[i2c1_aper] = clk_register_gate(NULL, clk_output_name[i2c1_aper],
+			clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 19, 0,
+			&aperclk_lock);
+	clks[uart0_aper] = clk_register_gate(NULL, clk_output_name[uart0_aper],
+			clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 20, 0,
+			&aperclk_lock);
+	clks[uart1_aper] = clk_register_gate(NULL, clk_output_name[uart1_aper],
+			clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 21, 0,
+			&aperclk_lock);
+	clks[gpio_aper] = clk_register_gate(NULL, clk_output_name[gpio_aper],
+			clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 22, 0,
+			&aperclk_lock);
+	clks[lqspi_aper] = clk_register_gate(NULL, clk_output_name[lqspi_aper],
+			clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 23, 0,
+			&aperclk_lock);
+	clks[smc_aper] = clk_register_gate(NULL, clk_output_name[smc_aper],
+			clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 24, 0,
+			&aperclk_lock);
+
+	for (i = 0; i < ARRAY_SIZE(clks); i++) {
+		if (IS_ERR(clks[i])) {
+			pr_err("Zynq clk %d: register failed with %ld\n",
+			       i, PTR_ERR(clks[i]));
+			BUG();
+		}
+	}
+
+	clk_data.clks = clks;
+	clk_data.clk_num = ARRAY_SIZE(clks);
+	of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
+}
+
+CLK_OF_DECLARE(zynq_clkc, "xlnx,ps7-clkc", zynq_clk_setup);
+
+void __init zynq_clock_init(void __iomem *slcr_base)
+{
+	zynq_slcr_base_priv = slcr_base;
+	of_clk_init(NULL);
+}
-- 
1.8.2.3

[PATCH v2 4/5] arm: zynq: Migrate platform to clock controller

[Soren Brinkmann]

Migrate the Zynq platform and its drivers to use the new clock
controller driver.

Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: linux-serial at vger.kernel.org
---
 arch/arm/boot/dts/zynq-7000.dtsi        | 71 ++++++++-------------------
 arch/arm/boot/dts/zynq-zc702.dts        |  4 --
 arch/arm/mach-zynq/slcr.c               |  2 +-
 drivers/clk/Makefile                    |  2 +-
 drivers/clk/zynq/Makefile               |  3 ++
 drivers/clocksource/cadence_ttc_timer.c | 23 +++++++--
 drivers/tty/serial/xilinx_uartps.c      | 85 ++++++++++++++++++++++++++-------
 include/linux/clk/zynq.h                |  8 +++-
 8 files changed, 118 insertions(+), 80 deletions(-)
 create mode 100644 drivers/clk/zynq/Makefile

diff --git a/arch/arm/boot/dts/zynq-7000.dtsi b/arch/arm/boot/dts/zynq-7000.dtsi
index 14fb2e6..0dbee2c 100644
--- a/arch/arm/boot/dts/zynq-7000.dtsi
+++ b/arch/arm/boot/dts/zynq-7000.dtsi
@@ -49,16 +49,18 @@
 
 		uart0: uart at e0000000 {
 			compatible = "xlnx,xuartps";
+			clocks = <&clkc 23>, <&clkc 40>;
+			clock-names = "ref_clk", "aper_clk";
 			reg = <0xE0000000 0x1000>;
 			interrupts = <0 27 4>;
-			clocks = <&uart_clk 0>;
 		};
 
 		uart1: uart at e0001000 {
 			compatible = "xlnx,xuartps";
+			clocks = <&clkc 24>, <&clkc 41>;
+			clock-names = "ref_clk", "aper_clk";
 			reg = <0xE0001000 0x1000>;
 			interrupts = <0 50 4>;
-			clocks = <&uart_clk 1>;
 		};
 
 		slcr: slcr at f8000000 {
@@ -69,50 +71,21 @@
 				#address-cells = <1>;
 				#size-cells = <0>;
 
-				ps_clk: ps_clk {
-					#clock-cells = <0>;
-					compatible = "fixed-clock";
-					/* clock-frequency set in board-specific file */
-					clock-output-names = "ps_clk";
-				};
-				armpll: armpll {
-					#clock-cells = <0>;
-					compatible = "xlnx,zynq-pll";
-					clocks = <&ps_clk>;
-					reg = <0x100 0x110>;
-					clock-output-names = "armpll";
-				};
-				ddrpll: ddrpll {
-					#clock-cells = <0>;
-					compatible = "xlnx,zynq-pll";
-					clocks = <&ps_clk>;
-					reg = <0x104 0x114>;
-					clock-output-names = "ddrpll";
-				};
-				iopll: iopll {
-					#clock-cells = <0>;
-					compatible = "xlnx,zynq-pll";
-					clocks = <&ps_clk>;
-					reg = <0x108 0x118>;
-					clock-output-names = "iopll";
-				};
-				uart_clk: uart_clk {
-					#clock-cells = <1>;
-					compatible = "xlnx,zynq-periph-clock";
-					clocks = <&iopll &armpll &ddrpll>;
-					reg = <0x154>;
-					clock-output-names = "uart0_ref_clk",
-							     "uart1_ref_clk";
-				};
-				cpu_clk: cpu_clk {
+				clkc: clkc {
 					#clock-cells = <1>;
-					compatible = "xlnx,zynq-cpu-clock";
-					clocks = <&iopll &armpll &ddrpll>;
-					reg = <0x120 0x1C4>;
-					clock-output-names = "cpu_6x4x",
-							     "cpu_3x2x",
-							     "cpu_2x",
-							     "cpu_1x";
+					compatible = "xlnx,ps7-clkc";
+					ps-clk-frequency = <33333333>;
+					clock-output-names = "armpll", "ddrpll", "iopll", "cpu_6or4x",
+							"cpu_3or2x", "cpu_2x", "cpu_1x", "ddr2x", "ddr3x",
+							"dci", "lqspi", "smc", "pcap", "gem0", "gem1",
+							"fclk0", "fclk1", "fclk2", "fclk3", "can0", "can1",
+							"sdio0", "sdio1", "uart0", "uart1", "spi0", "spi1",
+							"dma", "usb0_aper", "usb1_aper", "gem0_aper",
+							"gem1_aper", "sdio0_aper", "sdio1_aper",
+							"spi0_aper", "spi1_aper", "can0_aper", "can1_aper",
+							"i2c0_aper", "i2c1_aper", "uart0_aper", "uart1_aper",
+							"gpio_aper", "lqspi_aper", "smc_aper", "swdt",
+							"dbg_trc", "dbg_apb";
 				};
 			};
 		};
@@ -121,9 +94,8 @@
 			interrupt-parent = <&intc>;
 			interrupts = < 0 10 4 0 11 4 0 12 4 >;
 			compatible = "cdns,ttc";
+			clocks = <&clkc 6>;
 			reg = <0xF8001000 0x1000>;
-			clocks = <&cpu_clk 3>;
-			clock-names = "cpu_1x";
 			clock-ranges;
 		};
 
@@ -131,9 +103,8 @@
 			interrupt-parent = <&intc>;
 			interrupts = < 0 37 4 0 38 4 0 39 4 >;
 			compatible = "cdns,ttc";
+			clocks = <&clkc 6>;
 			reg = <0xF8002000 0x1000>;
-			clocks = <&cpu_clk 3>;
-			clock-names = "cpu_1x";
 			clock-ranges;
 		};
 		scutimer: scutimer at f8f00600 {
@@ -141,7 +112,7 @@
 			interrupts = < 1 13 0x301 >;
 			compatible = "arm,cortex-a9-twd-timer";
 			reg = < 0xf8f00600 0x20 >;
-			clocks = <&cpu_clk 1>;
+			clocks = <&clkc 4>;
 		} ;
 	};
 };
diff --git a/arch/arm/boot/dts/zynq-zc702.dts b/arch/arm/boot/dts/zynq-zc702.dts
index 86f44d5..e25a307 100644
--- a/arch/arm/boot/dts/zynq-zc702.dts
+++ b/arch/arm/boot/dts/zynq-zc702.dts
@@ -28,7 +28,3 @@
 	};
 
 };
-
-&ps_clk {
-	clock-frequency = <33333330>;
-};
diff --git a/arch/arm/mach-zynq/slcr.c b/arch/arm/mach-zynq/slcr.c
index c70969b..50d008d 100644
--- a/arch/arm/mach-zynq/slcr.c
+++ b/arch/arm/mach-zynq/slcr.c
@@ -117,7 +117,7 @@ int __init zynq_slcr_init(void)
 
 	pr_info("%s mapped to %p\n", np->name, zynq_slcr_base);
 
-	xilinx_zynq_clocks_init(zynq_slcr_base);
+	zynq_clock_init(zynq_slcr_base);
 
 	of_node_put(np);
 
diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index 137d3e7..fa435bc 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -27,7 +27,7 @@ obj-$(CONFIG_MACH_LOONGSON1)	+= clk-ls1x.o
 obj-$(CONFIG_ARCH_SUNXI)	+= sunxi/
 obj-$(CONFIG_ARCH_U8500)	+= ux500/
 obj-$(CONFIG_ARCH_VT8500)	+= clk-vt8500.o
-obj-$(CONFIG_ARCH_ZYNQ)		+= clk-zynq.o
+obj-$(CONFIG_ARCH_ZYNQ)		+= zynq/
 obj-$(CONFIG_ARCH_TEGRA)	+= tegra/
 obj-$(CONFIG_PLAT_SAMSUNG)	+= samsung/
 
diff --git a/drivers/clk/zynq/Makefile b/drivers/clk/zynq/Makefile
new file mode 100644
index 0000000..156d923
--- /dev/null
+++ b/drivers/clk/zynq/Makefile
@@ -0,0 +1,3 @@
+# Zynq clock specific Makefile
+
+obj-$(CONFIG_ARCH_ZYNQ)	+= clkc.o pll.o
diff --git a/drivers/clocksource/cadence_ttc_timer.c b/drivers/clocksource/cadence_ttc_timer.c
index 685bc60..4cbe28c 100644
--- a/drivers/clocksource/cadence_ttc_timer.c
+++ b/drivers/clocksource/cadence_ttc_timer.c
@@ -51,6 +51,8 @@
 
 #define TTC_CNT_CNTRL_DISABLE_MASK	0x1
 
+#define TTC_CLK_CNTRL_CSRC_MASK		(1 << 5)	/* clock source */
+
 /*
  * Setup the timers to use pre-scaling, using a fixed value for now that will
  * work across most input frequency, but it may need to be more dynamic
@@ -396,8 +398,9 @@ static void __init ttc_timer_init(struct device_node *timer)
 {
 	unsigned int irq;
 	void __iomem *timer_baseaddr;
-	struct clk *clk;
+	struct clk *clk_cs, *clk_ce;
 	static int initialized;
+	int clksel;
 
 	if (initialized)
 		return;
@@ -421,14 +424,24 @@ static void __init ttc_timer_init(struct device_node *timer)
 		BUG();
 	}
 
-	clk = of_clk_get_by_name(timer, "cpu_1x");
-	if (IS_ERR(clk)) {
+	clksel = __raw_readl(timer_baseaddr + TTC_CLK_CNTRL_OFFSET);
+	clksel = !!(clksel & TTC_CLK_CNTRL_CSRC_MASK);
+	clk_cs = of_clk_get(timer, clksel);
+	if (IS_ERR(clk_cs)) {
+		pr_err("ERROR: timer input clock not found\n");
+		BUG();
+	}
+
+	clksel = __raw_readl(timer_baseaddr + 4 + TTC_CLK_CNTRL_OFFSET);
+	clksel = !!(clksel & TTC_CLK_CNTRL_CSRC_MASK);
+	clk_ce = of_clk_get(timer, clksel);
+	if (IS_ERR(clk_ce)) {
 		pr_err("ERROR: timer input clock not found\n");
 		BUG();
 	}
 
-	ttc_setup_clocksource(clk, timer_baseaddr);
-	ttc_setup_clockevent(clk, timer_baseaddr + 4, irq);
+	ttc_setup_clocksource(clk_cs, timer_baseaddr);
+	ttc_setup_clockevent(clk_ce, timer_baseaddr + 4, irq);
 
 	pr_info("%s #0@%p, irq=%d\n", timer->name, timer_baseaddr, irq);
 }
diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
index b5f655d..916305a 100644
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c
@@ -14,6 +14,7 @@
 #include <linux/platform_device.h>
 #include <linux/serial.h>
 #include <linux/serial_core.h>
+#include <linux/slab.h>
 #include <linux/tty.h>
 #include <linux/tty_flip.h>
 #include <linux/console.h>
@@ -139,6 +140,16 @@
 #define XUARTPS_SR_RXTRIG	0x00000001 /* Rx Trigger */
 
 /**
+ * struct xuartps - device data
+ * @refclk	Reference clock
+ * @aperclk	APB clock
+ */
+struct xuartps {
+	struct clk		*refclk;
+	struct clk		*aperclk;
+};
+
+/**
  * xuartps_isr - Interrupt handler
  * @irq: Irq number
  * @dev_id: Id of the port
@@ -936,34 +947,55 @@ static int xuartps_probe(struct platform_device *pdev)
 	int rc;
 	struct uart_port *port;
 	struct resource *res, *res2;
-	struct clk *clk;
+	struct xuartps *xuartps_data;
 
-	clk = of_clk_get(pdev->dev.of_node, 0);
-	if (IS_ERR(clk)) {
-		dev_err(&pdev->dev, "no clock specified\n");
-		return PTR_ERR(clk);
+	xuartps_data = kzalloc(sizeof(*xuartps_data), GFP_KERNEL);
+	if (!xuartps_data)
+		return -ENOMEM;
+
+	xuartps_data->aperclk = clk_get(&pdev->dev, "aper_clk");
+	if (IS_ERR(xuartps_data->aperclk)) {
+		dev_err(&pdev->dev, "aper_clk clock not found.\n");
+		rc = PTR_ERR(xuartps_data->aperclk);
+		goto err_out_free;
+	}
+	xuartps_data->refclk = clk_get(&pdev->dev, "ref_clk");
+	if (IS_ERR(xuartps_data->refclk)) {
+		dev_err(&pdev->dev, "ref_clk clock not found.\n");
+		rc = PTR_ERR(xuartps_data->refclk);
+		goto err_out_clk_put_aper;
 	}
 
-	rc = clk_prepare_enable(clk);
+	rc = clk_prepare_enable(xuartps_data->aperclk);
+	if (rc) {
+		dev_err(&pdev->dev, "Unable to enable APER clock.\n");
+		goto err_out_clk_put;
+	}
+	rc = clk_prepare_enable(xuartps_data->refclk);
 	if (rc) {
-		dev_err(&pdev->dev, "could not enable clock\n");
-		return -EBUSY;
+		dev_err(&pdev->dev, "Unable to enable device clock.\n");
+		goto err_out_clk_dis_aper;
 	}
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res)
-		return -ENODEV;
+	if (!res) {
+		rc = -ENODEV;
+		goto err_out_clk_disable;
+	}
 
 	res2 = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-	if (!res2)
-		return -ENODEV;
+	if (!res2) {
+		rc = -ENODEV;
+		goto err_out_clk_disable;
+	}
 
 	/* Initialize the port structure */
 	port = xuartps_get_port();
 
 	if (!port) {
 		dev_err(&pdev->dev, "Cannot get uart_port structure\n");
-		return -ENODEV;
+		rc = -ENODEV;
+		goto err_out_clk_disable;
 	} else {
 		/* Register the port.
 		 * This function also registers this device with the tty layer
@@ -972,18 +1004,31 @@ static int xuartps_probe(struct platform_device *pdev)
 		port->mapbase = res->start;
 		port->irq = res2->start;
 		port->dev = &pdev->dev;
-		port->uartclk = clk_get_rate(clk);
-		port->private_data = clk;
+		port->uartclk = clk_get_rate(xuartps_data->refclk);
+		port->private_data = xuartps_data;
 		dev_set_drvdata(&pdev->dev, port);
 		rc = uart_add_one_port(&xuartps_uart_driver, port);
 		if (rc) {
 			dev_err(&pdev->dev,
 				"uart_add_one_port() failed; err=%i\n", rc);
 			dev_set_drvdata(&pdev->dev, NULL);
-			return rc;
+			goto err_out_clk_disable;
 		}
 		return 0;
 	}
+
+err_out_clk_disable:
+	clk_disable_unprepare(xuartps_data->refclk);
+err_out_clk_dis_aper:
+	clk_disable_unprepare(xuartps_data->aperclk);
+err_out_clk_put:
+	clk_put(xuartps_data->refclk);
+err_out_clk_put_aper:
+	clk_put(xuartps_data->aperclk);
+err_out_free:
+	kfree(xuartps_data);
+
+	return rc;
 }
 
 /**
@@ -995,14 +1040,18 @@ static int xuartps_probe(struct platform_device *pdev)
 static int xuartps_remove(struct platform_device *pdev)
 {
 	struct uart_port *port = dev_get_drvdata(&pdev->dev);
-	struct clk *clk = port->private_data;
+	struct xuartps *xuartps_data = port->private_data;
 	int rc;
 
 	/* Remove the xuartps port from the serial core */
 	rc = uart_remove_one_port(&xuartps_uart_driver, port);
 	dev_set_drvdata(&pdev->dev, NULL);
 	port->mapbase = 0;
-	clk_disable_unprepare(clk);
+	clk_disable_unprepare(xuartps_data->refclk);
+	clk_disable_unprepare(xuartps_data->aperclk);
+	clk_put(xuartps_data->refclk);
+	clk_put(xuartps_data->aperclk);
+	kfree(xuartps_data);
 	return rc;
 }
 
diff --git a/include/linux/clk/zynq.h b/include/linux/clk/zynq.h
index 56be7cd..e062d31 100644
--- a/include/linux/clk/zynq.h
+++ b/include/linux/clk/zynq.h
@@ -1,4 +1,5 @@
 /*
+ * Copyright (C) 2013 Xilinx Inc.
  * Copyright (C) 2012 National Instruments
  *
  * This program is free software; you can redistribute it and/or modify
@@ -19,6 +20,11 @@
 #ifndef __LINUX_CLK_ZYNQ_H_
 #define __LINUX_CLK_ZYNQ_H_
 
-void __init xilinx_zynq_clocks_init(void __iomem *slcr);
+#include <linux/spinlock.h>
 
+void zynq_clock_init(void __iomem *slcr);
+
+struct clk *clk_register_zynq_pll(const char *name, const char *parent,
+		void __iomem *pll_ctrl, void __iomem *pll_status, u8 lock_index,
+		spinlock_t *lock);
 #endif
-- 
1.8.2.3

[PATCH v2 5/5] clk: zynq: Remove deprecated clock code

[Soren Brinkmann]

Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Rob Landley <rob@landley.net>
Cc: devicetree-discuss at lists.ozlabs.org
Cc: linux-doc at vger.kernel.org
---
 .../devicetree/bindings/clock/zynq-7000.txt        |  49 ---
 drivers/clk/clk-zynq.c                             | 378 ---------------------
 2 files changed, 427 deletions(-)
 delete mode 100644 drivers/clk/clk-zynq.c

diff --git a/Documentation/devicetree/bindings/clock/zynq-7000.txt b/Documentation/devicetree/bindings/clock/zynq-7000.txt
index 30bfca9..b013ec6 100644
--- a/Documentation/devicetree/bindings/clock/zynq-7000.txt
+++ b/Documentation/devicetree/bindings/clock/zynq-7000.txt
@@ -102,52 +102,3 @@ Example:
 		clocks = <&clkc 16>, <&clk_foo>;
 		clock-names = "gem1_emio_clk", "can_mio_clk_23";
         };
-
-
-== PLLs ==
-
-Used to describe the ARM_PLL, DDR_PLL, and IO_PLL.
-
-Required properties:
-- #clock-cells : shall be 0 (only one clock is output from this node)
-- compatible : "xlnx,zynq-pll"
-- reg : pair of u32 values, which are the address offsets within the SLCR
-        of the relevant PLL_CTRL register and PLL_CFG register respectively
-- clocks : phandle for parent clock.  should be the phandle for ps_clk
-
-Optional properties:
-- clock-output-names : name of the output clock
-
-Example:
-	armpll: armpll {
-		#clock-cells = <0>;
-		compatible = "xlnx,zynq-pll";
-		clocks = <&ps_clk>;
-		reg = <0x100 0x110>;
-		clock-output-names = "armpll";
-	};
-
-== Peripheral clocks ==
-
-Describes clock node for the SDIO, SMC, SPI, QSPI, and UART clocks.
-
-Required properties:
-- #clock-cells : shall be 1
-- compatible : "xlnx,zynq-periph-clock"
-- reg : a single u32 value, describing the offset within the SLCR where
-        the CLK_CTRL register is found for this peripheral
-- clocks : phandle for parent clocks.  should hold phandles for
-           the IO_PLL, ARM_PLL, and DDR_PLL in order
-- clock-output-names : names of the output clock(s).  For peripherals that have
-                       two output clocks (for example, the UART), two clocks
-                       should be listed.
-
-Example:
-	uart_clk: uart_clk {
-		#clock-cells = <1>;
-		compatible = "xlnx,zynq-periph-clock";
-		clocks = <&iopll &armpll &ddrpll>;
-		reg = <0x154>;
-		clock-output-names = "uart0_ref_clk",
-				     "uart1_ref_clk";
-	};
diff --git a/drivers/clk/clk-zynq.c b/drivers/clk/clk-zynq.c
deleted file mode 100644
index 3206297..0000000
--- a/drivers/clk/clk-zynq.c
+++ /dev/null
@@ -1,378 +0,0 @@
-/*
- * Copyright (c) 2012 National Instruments
- *
- * Josh Cartwright <josh.cartwright@ni.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-#include <linux/io.h>
-#include <linux/of.h>
-#include <linux/slab.h>
-#include <linux/kernel.h>
-#include <linux/clk-provider.h>
-#include <linux/clk/zynq.h>
-
-static void __iomem *slcr_base;
-
-struct zynq_pll_clk {
-	struct clk_hw	hw;
-	void __iomem	*pll_ctrl;
-	void __iomem	*pll_cfg;
-};
-
-#define to_zynq_pll_clk(hw)	container_of(hw, struct zynq_pll_clk, hw)
-
-#define CTRL_PLL_FDIV(x)	((x) >> 12)
-
-static unsigned long zynq_pll_recalc_rate(struct clk_hw *hw,
-					  unsigned long parent_rate)
-{
-	struct zynq_pll_clk *pll = to_zynq_pll_clk(hw);
-	return parent_rate * CTRL_PLL_FDIV(ioread32(pll->pll_ctrl));
-}
-
-static const struct clk_ops zynq_pll_clk_ops = {
-	.recalc_rate	= zynq_pll_recalc_rate,
-};
-
-static void __init zynq_pll_clk_setup(struct device_node *np)
-{
-	struct clk_init_data init;
-	struct zynq_pll_clk *pll;
-	const char *parent_name;
-	struct clk *clk;
-	u32 regs[2];
-	int ret;
-
-	ret = of_property_read_u32_array(np, "reg", regs, ARRAY_SIZE(regs));
-	if (WARN_ON(ret))
-		return;
-
-	pll = kzalloc(sizeof(*pll), GFP_KERNEL);
-	if (WARN_ON(!pll))
-		return;
-
-	pll->pll_ctrl = slcr_base + regs[0];
-	pll->pll_cfg  = slcr_base + regs[1];
-
-	of_property_read_string(np, "clock-output-names", &init.name);
-
-	init.ops = &zynq_pll_clk_ops;
-	parent_name = of_clk_get_parent_name(np, 0);
-	init.parent_names = &parent_name;
-	init.num_parents = 1;
-
-	pll->hw.init = &init;
-
-	clk = clk_register(NULL, &pll->hw);
-	if (WARN_ON(IS_ERR(clk)))
-		return;
-
-	ret = of_clk_add_provider(np, of_clk_src_simple_get, clk);
-	if (WARN_ON(ret))
-		return;
-}
-CLK_OF_DECLARE(zynq_pll, "xlnx,zynq-pll", zynq_pll_clk_setup);
-
-struct zynq_periph_clk {
-	struct clk_hw		hw;
-	struct clk_onecell_data	onecell_data;
-	struct clk		*gates[2];
-	void __iomem		*clk_ctrl;
-	spinlock_t		clkact_lock;
-};
-
-#define to_zynq_periph_clk(hw)	container_of(hw, struct zynq_periph_clk, hw)
-
-static const u8 periph_clk_parent_map[] = {
-	0, 0, 1, 2
-};
-#define PERIPH_CLK_CTRL_SRC(x)	(periph_clk_parent_map[((x) & 0x30) >> 4])
-#define PERIPH_CLK_CTRL_DIV(x)	(((x) & 0x3F00) >> 8)
-
-static unsigned long zynq_periph_recalc_rate(struct clk_hw *hw,
-					     unsigned long parent_rate)
-{
-	struct zynq_periph_clk *periph = to_zynq_periph_clk(hw);
-	return parent_rate / PERIPH_CLK_CTRL_DIV(ioread32(periph->clk_ctrl));
-}
-
-static u8 zynq_periph_get_parent(struct clk_hw *hw)
-{
-	struct zynq_periph_clk *periph = to_zynq_periph_clk(hw);
-	return PERIPH_CLK_CTRL_SRC(ioread32(periph->clk_ctrl));
-}
-
-static const struct clk_ops zynq_periph_clk_ops = {
-	.recalc_rate	= zynq_periph_recalc_rate,
-	.get_parent	= zynq_periph_get_parent,
-};
-
-static void __init zynq_periph_clk_setup(struct device_node *np)
-{
-	struct zynq_periph_clk *periph;
-	const char *parent_names[3];
-	struct clk_init_data init;
-	int clk_num = 0, err;
-	const char *name;
-	struct clk *clk;
-	u32 reg;
-	int i;
-
-	err = of_property_read_u32(np, "reg", &reg);
-	if (WARN_ON(err))
-		return;
-
-	periph = kzalloc(sizeof(*periph), GFP_KERNEL);
-	if (WARN_ON(!periph))
-		return;
-
-	periph->clk_ctrl = slcr_base + reg;
-	spin_lock_init(&periph->clkact_lock);
-
-	init.name = np->name;
-	init.ops = &zynq_periph_clk_ops;
-	for (i = 0; i < ARRAY_SIZE(parent_names); i++)
-		parent_names[i] = of_clk_get_parent_name(np, i);
-	init.parent_names = parent_names;
-	init.num_parents = ARRAY_SIZE(parent_names);
-
-	periph->hw.init = &init;
-
-	clk = clk_register(NULL, &periph->hw);
-	if (WARN_ON(IS_ERR(clk)))
-		return;
-
-	err = of_clk_add_provider(np, of_clk_src_simple_get, clk);
-	if (WARN_ON(err))
-		return;
-
-	err = of_property_read_string_index(np, "clock-output-names", 0,
-					    &name);
-	if (WARN_ON(err))
-		return;
-
-	periph->gates[0] = clk_register_gate(NULL, name, np->name, 0,
-					     periph->clk_ctrl, 0, 0,
-					     &periph->clkact_lock);
-	if (WARN_ON(IS_ERR(periph->gates[0])))
-		return;
-	clk_num++;
-
-	/* some periph clks have 2 downstream gates */
-	err = of_property_read_string_index(np, "clock-output-names", 1,
-					    &name);
-	if (err != -ENODATA) {
-		periph->gates[1] = clk_register_gate(NULL, name, np->name, 0,
-						     periph->clk_ctrl, 1, 0,
-						     &periph->clkact_lock);
-		if (WARN_ON(IS_ERR(periph->gates[1])))
-			return;
-		clk_num++;
-	}
-
-	periph->onecell_data.clks = periph->gates;
-	periph->onecell_data.clk_num = clk_num;
-
-	err = of_clk_add_provider(np, of_clk_src_onecell_get,
-				  &periph->onecell_data);
-	if (WARN_ON(err))
-		return;
-}
-CLK_OF_DECLARE(zynq_periph, "xlnx,zynq-periph-clock", zynq_periph_clk_setup);
-
-/* CPU Clock domain is modelled as a mux with 4 children subclks, whose
- * derivative rates depend on CLK_621_TRUE
- */
-
-struct zynq_cpu_clk {
-	struct clk_hw		hw;
-	struct clk_onecell_data	onecell_data;
-	struct clk		*subclks[4];
-	void __iomem		*clk_ctrl;
-	spinlock_t		clkact_lock;
-};
-
-#define to_zynq_cpu_clk(hw)	container_of(hw, struct zynq_cpu_clk, hw)
-
-static const u8 zynq_cpu_clk_parent_map[] = {
-	1, 1, 2, 0
-};
-#define CPU_CLK_SRCSEL(x)	(zynq_cpu_clk_parent_map[(((x) & 0x30) >> 4)])
-#define CPU_CLK_CTRL_DIV(x)	(((x) & 0x3F00) >> 8)
-
-static u8 zynq_cpu_clk_get_parent(struct clk_hw *hw)
-{
-	struct zynq_cpu_clk *cpuclk = to_zynq_cpu_clk(hw);
-	return CPU_CLK_SRCSEL(ioread32(cpuclk->clk_ctrl));
-}
-
-static unsigned long zynq_cpu_clk_recalc_rate(struct clk_hw *hw,
-					      unsigned long parent_rate)
-{
-	struct zynq_cpu_clk *cpuclk = to_zynq_cpu_clk(hw);
-	return parent_rate / CPU_CLK_CTRL_DIV(ioread32(cpuclk->clk_ctrl));
-}
-
-static const struct clk_ops zynq_cpu_clk_ops = {
-	.get_parent	= zynq_cpu_clk_get_parent,
-	.recalc_rate	= zynq_cpu_clk_recalc_rate,
-};
-
-struct zynq_cpu_subclk {
-	struct clk_hw	hw;
-	void __iomem	*clk_621;
-	enum {
-		CPU_SUBCLK_6X4X,
-		CPU_SUBCLK_3X2X,
-		CPU_SUBCLK_2X,
-		CPU_SUBCLK_1X,
-	} which;
-};
-
-#define CLK_621_TRUE(x)	((x) & 1)
-
-#define to_zynq_cpu_subclk(hw)	container_of(hw, struct zynq_cpu_subclk, hw);
-
-static unsigned long zynq_cpu_subclk_recalc_rate(struct clk_hw *hw,
-						 unsigned long parent_rate)
-{
-	unsigned long uninitialized_var(rate);
-	struct zynq_cpu_subclk *subclk;
-	bool is_621;
-
-	subclk = to_zynq_cpu_subclk(hw)
-	is_621 = CLK_621_TRUE(ioread32(subclk->clk_621));
-
-	switch (subclk->which) {
-	case CPU_SUBCLK_6X4X:
-		rate = parent_rate;
-		break;
-	case CPU_SUBCLK_3X2X:
-		rate = parent_rate / 2;
-		break;
-	case CPU_SUBCLK_2X:
-		rate = parent_rate / (is_621 ? 3 : 2);
-		break;
-	case CPU_SUBCLK_1X:
-		rate = parent_rate / (is_621 ? 6 : 4);
-		break;
-	};
-
-	return rate;
-}
-
-static const struct clk_ops zynq_cpu_subclk_ops = {
-	.recalc_rate	= zynq_cpu_subclk_recalc_rate,
-};
-
-static struct clk *zynq_cpu_subclk_setup(struct device_node *np, u8 which,
-					 void __iomem *clk_621)
-{
-	struct zynq_cpu_subclk *subclk;
-	struct clk_init_data init;
-	struct clk *clk;
-	int err;
-
-	err = of_property_read_string_index(np, "clock-output-names",
-					    which, &init.name);
-	if (WARN_ON(err))
-		goto err_read_output_name;
-
-	subclk = kzalloc(sizeof(*subclk), GFP_KERNEL);
-	if (!subclk)
-		goto err_subclk_alloc;
-
-	subclk->clk_621 = clk_621;
-	subclk->which = which;
-
-	init.ops = &zynq_cpu_subclk_ops;
-	init.parent_names = &np->name;
-	init.num_parents = 1;
-
-	subclk->hw.init = &init;
-
-	clk = clk_register(NULL, &subclk->hw);
-	if (WARN_ON(IS_ERR(clk)))
-		goto err_clk_register;
-
-	return clk;
-
-err_clk_register:
-	kfree(subclk);
-err_subclk_alloc:
-err_read_output_name:
-	return ERR_PTR(-EINVAL);
-}
-
-static void __init zynq_cpu_clk_setup(struct device_node *np)
-{
-	struct zynq_cpu_clk *cpuclk;
-	const char *parent_names[3];
-	struct clk_init_data init;
-	void __iomem *clk_621;
-	struct clk *clk;
-	u32 reg[2];
-	int err;
-	int i;
-
-	err = of_property_read_u32_array(np, "reg", reg, ARRAY_SIZE(reg));
-	if (WARN_ON(err))
-		return;
-
-	cpuclk = kzalloc(sizeof(*cpuclk), GFP_KERNEL);
-	if (WARN_ON(!cpuclk))
-		return;
-
-	cpuclk->clk_ctrl = slcr_base + reg[0];
-	clk_621 = slcr_base + reg[1];
-	spin_lock_init(&cpuclk->clkact_lock);
-
-	init.name = np->name;
-	init.ops = &zynq_cpu_clk_ops;
-	for (i = 0; i < ARRAY_SIZE(parent_names); i++)
-		parent_names[i] = of_clk_get_parent_name(np, i);
-	init.parent_names = parent_names;
-	init.num_parents = ARRAY_SIZE(parent_names);
-
-	cpuclk->hw.init = &init;
-
-	clk = clk_register(NULL, &cpuclk->hw);
-	if (WARN_ON(IS_ERR(clk)))
-		return;
-
-	err = of_clk_add_provider(np, of_clk_src_simple_get, clk);
-	if (WARN_ON(err))
-		return;
-
-	for (i = 0; i < 4; i++) {
-		cpuclk->subclks[i] = zynq_cpu_subclk_setup(np, i, clk_621);
-		if (WARN_ON(IS_ERR(cpuclk->subclks[i])))
-			return;
-	}
-
-	cpuclk->onecell_data.clks = cpuclk->subclks;
-	cpuclk->onecell_data.clk_num = i;
-
-	err = of_clk_add_provider(np, of_clk_src_onecell_get,
-				  &cpuclk->onecell_data);
-	if (WARN_ON(err))
-		return;
-}
-CLK_OF_DECLARE(zynq_cpu, "xlnx,zynq-cpu-clock", zynq_cpu_clk_setup);
-
-void __init xilinx_zynq_clocks_init(void __iomem *slcr)
-{
-	slcr_base = slcr;
-	of_clk_init(NULL);
-}
-- 
1.8.2.3

[PATCH v2 0/5] Zynq: revised CCF code

[Michal Simek]

Hi Mike,

I have sent email to Greg to take this patch from this series
though his serial tree because it is unrelated to this clock stuff.

Can you please give me your ACK for these patches or add them
to your CLK tree?

I just need to move this to be able to start to push other drivers
which are related to this.

Thanks,
Michal


On 05/13/2013 07:46 PM, Soren Brinkmann wrote:
> I rebased this series on v3.10-rc1 eliminating all dependencies and incorporated
> Greg's feedback.
> I'll push this also to my github repository.
> https://github.com/sorenb-xlnx/linux-xlnx/tree/zynq/clkc
> 
> v2:
>  - dropped the 'sort #includes' patches
> 
> 	S?ren
> 
> 
> Soren Brinkmann (5):
>   tty: xuartps: Remove suspend/resume functions
>   clk: zynq: Factor out PLL driver
>   clk: zynq: Add clock controller driver
>   arm: zynq: Migrate platform to clock controller
>   clk: zynq: Remove deprecated clock code
> 
>  .../devicetree/bindings/clock/zynq-7000.txt        | 127 +++--
>  arch/arm/boot/dts/zynq-7000.dtsi                   |  71 +--
>  arch/arm/boot/dts/zynq-zc702.dts                   |   4 -
>  arch/arm/mach-zynq/slcr.c                          |   2 +-
>  drivers/clk/Makefile                               |   2 +-
>  drivers/clk/clk-zynq.c                             | 378 ---------------
>  drivers/clk/zynq/Makefile                          |   3 +
>  drivers/clk/zynq/clkc.c                            | 533 +++++++++++++++++++++
>  drivers/clk/zynq/pll.c                             | 235 +++++++++
>  drivers/clocksource/cadence_ttc_timer.c            |  23 +-
>  drivers/tty/serial/xilinx_uartps.c                 | 115 +++--
>  include/linux/clk/zynq.h                           |   8 +-
>  12 files changed, 974 insertions(+), 527 deletions(-)
>  delete mode 100644 drivers/clk/clk-zynq.c
>  create mode 100644 drivers/clk/zynq/Makefile
>  create mode 100644 drivers/clk/zynq/clkc.c
>  create mode 100644 drivers/clk/zynq/pll.c
> 


-- 
Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel - Microblaze cpu - http://www.monstr.eu/fdt/
Maintainer of Linux kernel - Xilinx Zynq ARM architecture
Microblaze U-BOOT custodian and responsible for u-boot arm zynq platform


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[PATCH v2 0/5] Zynq: revised CCF code

[Mike Turquette]

Quoting Michal Simek (2013-05-17 05:14:47)
> Hi Mike,
> 
> I have sent email to Greg to take this patch from this series
> though his serial tree because it is unrelated to this clock stuff.
> 
> Can you please give me your ACK for these patches or add them
> to your CLK tree?
> 

For the four clock-related patches:

Acked-by: Mike Turquette <mturquette@linaro.org>

Regards,
Mike

> I just need to move this to be able to start to push other drivers
> which are related to this.
> 
> Thanks,
> Michal
> 
> 
> On 05/13/2013 07:46 PM, Soren Brinkmann wrote:
> > I rebased this series on v3.10-rc1 eliminating all dependencies and incorporated
> > Greg's feedback.
> > I'll push this also to my github repository.
> > https://github.com/sorenb-xlnx/linux-xlnx/tree/zynq/clkc
> > 
> > v2:
> >  - dropped the 'sort #includes' patches
> > 
> >       S?ren
> > 
> > 
> > Soren Brinkmann (5):
> >   tty: xuartps: Remove suspend/resume functions
> >   clk: zynq: Factor out PLL driver
> >   clk: zynq: Add clock controller driver
> >   arm: zynq: Migrate platform to clock controller
> >   clk: zynq: Remove deprecated clock code
> > 
> >  .../devicetree/bindings/clock/zynq-7000.txt        | 127 +++--
> >  arch/arm/boot/dts/zynq-7000.dtsi                   |  71 +--
> >  arch/arm/boot/dts/zynq-zc702.dts                   |   4 -
> >  arch/arm/mach-zynq/slcr.c                          |   2 +-
> >  drivers/clk/Makefile                               |   2 +-
> >  drivers/clk/clk-zynq.c                             | 378 ---------------
> >  drivers/clk/zynq/Makefile                          |   3 +
> >  drivers/clk/zynq/clkc.c                            | 533 +++++++++++++++++++++
> >  drivers/clk/zynq/pll.c                             | 235 +++++++++
> >  drivers/clocksource/cadence_ttc_timer.c            |  23 +-
> >  drivers/tty/serial/xilinx_uartps.c                 | 115 +++--
> >  include/linux/clk/zynq.h                           |   8 +-
> >  12 files changed, 974 insertions(+), 527 deletions(-)
> >  delete mode 100644 drivers/clk/clk-zynq.c
> >  create mode 100644 drivers/clk/zynq/Makefile
> >  create mode 100644 drivers/clk/zynq/clkc.c
> >  create mode 100644 drivers/clk/zynq/pll.c
> > 
> 
> 
> -- 
> Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91
> w: www.monstr.eu p: +42-0-721842854
> Maintainer of Linux kernel - Microblaze cpu - http://www.monstr.eu/fdt/
> Maintainer of Linux kernel - Xilinx Zynq ARM architecture
> Microblaze U-BOOT custodian and responsible for u-boot arm zynq platform

[PATCH v2 0/5] Zynq: revised CCF code

[Michal Simek]

On 05/30/2013 08:44 PM, Mike Turquette wrote:
> Quoting Michal Simek (2013-05-17 05:14:47)
>> Hi Mike,
>>
>> I have sent email to Greg to take this patch from this series
>> though his serial tree because it is unrelated to this clock stuff.
>>
>> Can you please give me your ACK for these patches or add them
>> to your CLK tree?
>>
> 
> For the four clock-related patches:
> 
> Acked-by: Mike Turquette <mturquette@linaro.org>

I have already sent pull request to Arnd and Olof.
Or is it you who should take these patches through your tree?

Thanks.
Michal


-- 
Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel - Microblaze cpu - http://www.monstr.eu/fdt/
Maintainer of Linux kernel - Xilinx Zynq ARM architecture
Microblaze U-BOOT custodian and responsible for u-boot arm zynq platform


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[PATCH v2 0/5] Zynq: revised CCF code

[Mike Turquette]

Quoting Michal Simek (2013-05-30 22:17:59)
> On 05/30/2013 08:44 PM, Mike Turquette wrote:
> > Quoting Michal Simek (2013-05-17 05:14:47)
> >> Hi Mike,
> >>
> >> I have sent email to Greg to take this patch from this series
> >> though his serial tree because it is unrelated to this clock stuff.
> >>
> >> Can you please give me your ACK for these patches or add them
> >> to your CLK tree?
> >>
> > 
> > For the four clock-related patches:
> > 
> > Acked-by: Mike Turquette <mturquette@linaro.org>
> 
> I have already sent pull request to Arnd and Olof.
> Or is it you who should take these patches through your tree?
> 

Either way is fine.  Since you have already sent the pull request to the
arm-soc tree then that is probably the best path.

Regards,
Mike

> Thanks.
> Michal
> 
> 
> -- 
> Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91
> w: www.monstr.eu p: +42-0-721842854
> Maintainer of Linux kernel - Microblaze cpu - http://www.monstr.eu/fdt/
> Maintainer of Linux kernel - Xilinx Zynq ARM architecture
> Microblaze U-BOOT custodian and responsible for u-boot arm zynq platform

[PATCH v2 0/5] Zynq: revised CCF code

[Michal Simek]

On 05/31/2013 08:32 AM, Mike Turquette wrote:
> Quoting Michal Simek (2013-05-30 22:17:59)
>> On 05/30/2013 08:44 PM, Mike Turquette wrote:
>>> Quoting Michal Simek (2013-05-17 05:14:47)
>>>> Hi Mike,
>>>>
>>>> I have sent email to Greg to take this patch from this series
>>>> though his serial tree because it is unrelated to this clock stuff.
>>>>
>>>> Can you please give me your ACK for these patches or add them
>>>> to your CLK tree?
>>>>
>>>
>>> For the four clock-related patches:
>>>
>>> Acked-by: Mike Turquette <mturquette@linaro.org>
>>
>> I have already sent pull request to Arnd and Olof.
>> Or is it you who should take these patches through your tree?
>>
> 
> Either way is fine.  Since you have already sent the pull request to the
> arm-soc tree then that is probably the best path.

ok. I will keep my eyes on it.

Thanks,
Michal

-- 
Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel - Microblaze cpu - http://www.monstr.eu/fdt/
Maintainer of Linux kernel - Xilinx Zynq ARM architecture
Microblaze U-BOOT custodian and responsible for u-boot arm zynq platform


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[PATCH v2 0/5] Zynq: revised CCF code

[Michal Simek]

On 05/13/2013 07:46 PM, Soren Brinkmann wrote:
> I rebased this series on v3.10-rc1 eliminating all dependencies and incorporated
> Greg's feedback.
> I'll push this also to my github repository.
> https://github.com/sorenb-xlnx/linux-xlnx/tree/zynq/clkc
> 
> v2:
>  - dropped the 'sort #includes' patches
> 
> 	S?ren
> 
> 
> Soren Brinkmann (5):
>   tty: xuartps: Remove suspend/resume functions

This patch will go through Greg trees.

>   clk: zynq: Factor out PLL driver
>   clk: zynq: Add clock controller driver
>   arm: zynq: Migrate platform to clock controller
>   clk: zynq: Remove deprecated clock code

I have added these patches to my arm-next branch
and also to zynq/clk branch.

Thanks,
Michal