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clk: max77686: Add support for MAX77620 clocks 

Maxim Max77620 has one 32KHz clock output and the clock HW
IP used on this PMIC is same as what it is there in the MAX77686.

Add clock driver support for MAX77620 on the MAX77686 driver.

CC: Krzysztof Kozlowski <k.kozlowski@samsung.com>
CC: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Tested-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This commit is contained in:
Laxman Dewangan 2016-06-17 16:21:07 +05:30 committed by Stephen Boyd
parent e581245d8a
commit 5a227cd1ab
2 changed files with 22 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/clk/Kconfig
View File

@ -32,10 +32,11 @@ config COMMON_CLK_WM831X
source "drivers/clk/versatile/Kconfig"
config COMMON_CLK_MAX77686
tristate "Clock driver for Maxim 77686/77802 MFD"
depends on MFD_MAX77686
tristate "Clock driver for Maxim 77620/77686/77802 MFD"
depends on MFD_MAX77686 || MFD_MAX77620
---help---
This driver supports Maxim 77686/77802 crystal oscillator clock.
This driver supports Maxim 77620/77686/77802 crystal oscillator
clock.
config COMMON_CLK_RK808
tristate "Clock driver for RK808/RK818"

18
drivers/clk/clk-max77686.c
View File

@ -25,6 +25,7 @@
#include <linux/err.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/mfd/max77620.h>
#include <linux/mfd/max77686.h>
#include <linux/mfd/max77686-private.h>
#include <linux/clk-provider.h>
@ -35,12 +36,14 @@
#include <dt-bindings/clock/maxim,max77686.h>
#include <dt-bindings/clock/maxim,max77802.h>
#include <dt-bindings/clock/maxim,max77620.h>
#define MAX77802_CLOCK_LOW_JITTER_SHIFT 0x3
enum max77686_chip_name {
CHIP_MAX77686,
CHIP_MAX77802,
CHIP_MAX77620,
};
struct max77686_hw_clk_info {
@ -97,6 +100,15 @@ max77686_hw_clk_info max77802_hw_clks_info[MAX77802_CLKS_NUM] = {
},
};
static const struct
max77686_hw_clk_info max77620_hw_clks_info[MAX77620_CLKS_NUM] = {
[MAX77620_CLK_32K_OUT0] = {
.name = "32khz_out0",
.clk_reg = MAX77620_REG_CNFG1_32K,
.clk_enable_mask = MAX77620_CNFG1_32K_OUT0_EN,
},
};
static struct max77686_clk_init_data *to_max77686_clk_init_data(
struct clk_hw *hw)
{
@ -181,6 +193,11 @@ static int max77686_clk_probe(struct platform_device *pdev)
hw_clks = max77802_hw_clks_info;
break;
case CHIP_MAX77620:
num_clks = MAX77620_CLKS_NUM;
hw_clks = max77620_hw_clks_info;
break;
default:
dev_err(dev, "Unknown Chip ID\n");
return -EINVAL;
@ -284,6 +301,7 @@ static int max77686_clk_remove(struct platform_device *pdev)
static const struct platform_device_id max77686_clk_id[] = {
{ "max77686-clk", .driver_data = CHIP_MAX77686, },
{ "max77802-clk", .driver_data = CHIP_MAX77802, },
{ "max77620-clock", .driver_data = CHIP_MAX77620, },
{},
};
MODULE_DEVICE_TABLE(platform, max77686_clk_id);