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clk: bd718x7: Support ROHM BD70528 clk block 

ROHM BD70528 is an ultra low power PMIC with similar 32K clk as
bd718x7. Only difference (from clk perspective) is register address.
Add support for controlling BD70528 clk using bd718x7 driver.

Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Matti Vaittinen 2019-06-03 10:25:39 +03:00 committed by Lee Jones
parent 21b7c58fc1
commit 0dae7f5857
2 changed files with 19 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/clk/Kconfig
View File

@ -293,10 +293,10 @@ config COMMON_CLK_STM32H7
config COMMON_CLK_BD718XX config COMMON_CLK_BD718XX
tristate "Clock driver for ROHM BD718x7 PMIC" tristate "Clock driver for ROHM BD718x7 PMIC"
depends on MFD_ROHM_BD718XX depends on MFD_ROHM_BD718XX || MFD_ROHM_BD70528
help help
This driver supports ROHM BD71837 and ROHM BD71847 This driver supports ROHM BD71837, ROHM BD71847 and
PMICs clock gates. ROHM BD70528 PMICs clock gates.
config COMMON_CLK_FIXED_MMIO config COMMON_CLK_FIXED_MMIO
bool "Clock driver for Memory Mapped Fixed values" bool "Clock driver for Memory Mapped Fixed values"

20
drivers/clk/clk-bd718x7.c
View File

@ -8,6 +8,7 @@
#include <linux/platform_device.h> #include <linux/platform_device.h>
#include <linux/slab.h> #include <linux/slab.h>
#include <linux/mfd/rohm-bd718x7.h> #include <linux/mfd/rohm-bd718x7.h>
#include <linux/mfd/rohm-bd70528.h>
#include <linux/clk-provider.h> #include <linux/clk-provider.h>
#include <linux/clkdev.h> #include <linux/clkdev.h>
#include <linux/regmap.h> #include <linux/regmap.h>
@ -86,9 +87,20 @@ static int bd71837_clk_probe(struct platform_device *pdev)
dev_err(&pdev->dev, "No parent clk found\n"); dev_err(&pdev->dev, "No parent clk found\n");
return -EINVAL; return -EINVAL;
} }
switch (mfd->chip_type) {
c->reg = BD718XX_REG_OUT32K; case ROHM_CHIP_TYPE_BD71837:
c->mask = BD718XX_OUT32K_EN; case ROHM_CHIP_TYPE_BD71847:
c->reg = BD718XX_REG_OUT32K;
c->mask = BD718XX_OUT32K_EN;
break;
case ROHM_CHIP_TYPE_BD70528:
c->reg = BD70528_REG_CLK_OUT;
c->mask = BD70528_CLK_OUT_EN_MASK;
break;
default:
dev_err(&pdev->dev, "Unknown clk chip\n");
return -EINVAL;
}
c->mfd = mfd; c->mfd = mfd;
c->pdev = pdev; c->pdev = pdev;
c->hw.init = &init; c->hw.init = &init;
@ -119,5 +131,5 @@ static struct platform_driver bd71837_clk = {
module_platform_driver(bd71837_clk); module_platform_driver(bd71837_clk);
MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>"); MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>");
MODULE_DESCRIPTION("BD71837/BD71847 chip clk driver"); MODULE_DESCRIPTION("BD71837/BD71847/BD70528 chip clk driver");
MODULE_LICENSE("GPL"); MODULE_LICENSE("GPL");