Commit 06b45f2a authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'pwm/for-4.1-rc1' of... 

Merge tag 'pwm/for-4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm

Pull pwm changes from Thierry Reding:
 "Not much has been happening in PWM land lately, so this contains
  mostly minor fixes that didn't seem urgent enough for a late
  pull-request last cycle"

* tag 'pwm/for-4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
  pwm: Remove __init initializer for pwm_add_table()
  pwm: samsung: Fix output race on disabling
  pwm: mxs: Fix period divider computation
  pwm: atmel-hlcdc: Add errata handling for sama5d4
  pwm: pca9685: Constify struct regmap_config
  pwm: imx-pwm: add explicit compatible strings and required clock properties
parents b3f4ef0b c264f111

Documentation/devicetree/bindings/pwm/imx-pwm.txt

+11 −1
Original line number Diff line number Diff line 
Freescale i.MX PWM controller



Required properties:

- compatible: should be "fsl,<soc>-pwm"

- compatible : should be "fsl,<soc>-pwm" and one of the following

   compatible strings:

  - "fsl,imx1-pwm" for PWM compatible with the one integrated on i.MX1

  - "fsl,imx27-pwm" for PWM compatible with the one integrated on i.MX27

- reg: physical base address and length of the controller's registers

- #pwm-cells: should be 2. See pwm.txt in this directory for a description of

  the cells format.

- clocks : Clock specifiers for both ipg and per clocks.

- clock-names : Clock names should include both "ipg" and "per"

See the clock consumer binding,

	Documentation/devicetree/bindings/clock/clock-bindings.txt

- interrupts: The interrupt for the pwm controller



Example:
@@ -13,5 +20,8 @@ pwm1: pwm@53fb4000 { 
	#pwm-cells = <2>;

	compatible = "fsl,imx53-pwm", "fsl,imx27-pwm";

	reg = <0x53fb4000 0x4000>;

	clocks = <&clks IMX5_CLK_PWM1_IPG_GATE>,

		 <&clks IMX5_CLK_PWM1_HF_GATE>;

	clock-names = "ipg", "per";

	interrupts = <61>;

};

drivers/pwm/core.c

+1 −1
Original line number Diff line number Diff line
@@ -573,7 +573,7 @@ EXPORT_SYMBOL_GPL(of_pwm_get); 
 * @table: array of consumers to register

 * @num: number of consumers in table

 */

void __init pwm_add_table(struct pwm_lookup *table, size_t num)

void pwm_add_table(struct pwm_lookup *table, size_t num)

{

	mutex_lock(&pwm_lookup_lock);

drivers/pwm/pwm-atmel-hlcdc.c

+4 −0
Original line number Diff line number Diff line
@@ -225,6 +225,10 @@ static const struct of_device_id atmel_hlcdc_dt_ids[] = { 
		.compatible = "atmel,sama5d3-hlcdc",

		.data = &atmel_hlcdc_pwm_sama5d3_errata,

	},

	{

		.compatible = "atmel,sama5d4-hlcdc",

		.data = &atmel_hlcdc_pwm_sama5d3_errata,

	},

	{ /* sentinel */ },

};

drivers/pwm/pwm-mxs.c

+6 −2
Original line number Diff line number Diff line
@@ -35,6 +35,10 @@ 
#define  PERIOD_CDIV(div)	(((div) & 0x7) << 20)

#define  PERIOD_CDIV_MAX	8



static const unsigned int cdiv[PERIOD_CDIV_MAX] = {

	1, 2, 4, 8, 16, 64, 256, 1024

};



struct mxs_pwm_chip {

	struct pwm_chip chip;

	struct clk *clk;
@@ -54,13 +58,13 @@ static int mxs_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm, 


	rate = clk_get_rate(mxs->clk);

	while (1) {

		c = rate / (1 << div);

		c = rate / cdiv[div];

		c = c * period_ns;

		do_div(c, 1000000000);

		if (c < PERIOD_PERIOD_MAX)

			break;

		div++;

		if (div > PERIOD_CDIV_MAX)

		if (div >= PERIOD_CDIV_MAX)

			return -EINVAL;

	}

drivers/pwm/pwm-pca9685.c

+1 −1
Original line number Diff line number Diff line
@@ -202,7 +202,7 @@ static const struct pwm_ops pca9685_pwm_ops = { 
	.owner = THIS_MODULE,

};



static struct regmap_config pca9685_regmap_i2c_config = {

static const struct regmap_config pca9685_regmap_i2c_config = {

	.reg_bits = 8,

	.val_bits = 8,

	.max_register = PCA9685_NUMREGS,

CRA Git | Maintained and supported by SUSTech CRA and CCSE