From: Peng Fan <[email protected]>
The current driver only support one clock, however LPI2C requires
two clocks: PER and IPG.
To make sure old dts could work with newer kernel, use bulk clk
API.
Reviewed-by: Dong Aisheng <[email protected]>
Signed-off-by: Peng Fan <[email protected]>
---
drivers/i2c/busses/i2c-imx-lpi2c.c | 24 ++++++++++++------------
1 file changed, 12 insertions(+), 12 deletions(-)
diff --git a/drivers/i2c/busses/i2c-imx-lpi2c.c b/drivers/i2c/busses/i2c-imx-lpi2c.c
index b51ab3cad2b1..188f2a36d2fd 100644
--- a/drivers/i2c/busses/i2c-imx-lpi2c.c
+++ b/drivers/i2c/busses/i2c-imx-lpi2c.c
@@ -94,7 +94,8 @@ enum lpi2c_imx_pincfg {
struct lpi2c_imx_struct {
struct i2c_adapter adapter;
- struct clk *clk;
+ int num_clks;
+ struct clk_bulk_data *clks;
void __iomem *base;
__u8 *rx_buf;
__u8 *tx_buf;
@@ -207,7 +208,7 @@ static int lpi2c_imx_config(struct lpi2c_imx_struct *lpi2c_imx)
lpi2c_imx_set_mode(lpi2c_imx);
- clk_rate = clk_get_rate(lpi2c_imx->clk);
+ clk_rate = clk_get_rate(lpi2c_imx->clks[0].clk);
if (lpi2c_imx->mode == HS || lpi2c_imx->mode == ULTRA_FAST)
filt = 0;
else
@@ -561,11 +562,12 @@ static int lpi2c_imx_probe(struct platform_device *pdev)
strscpy(lpi2c_imx->adapter.name, pdev->name,
sizeof(lpi2c_imx->adapter.name));
- lpi2c_imx->clk = devm_clk_get(&pdev->dev, NULL);
- if (IS_ERR(lpi2c_imx->clk)) {
- dev_err(&pdev->dev, "can't get I2C peripheral clock\n");
- return PTR_ERR(lpi2c_imx->clk);
+ ret = devm_clk_bulk_get_all(&pdev->dev, &lpi2c_imx->clks);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "can't get I2C peripheral clock, ret=%d\n", ret);
+ return ret;
}
+ lpi2c_imx->num_clks = ret;
ret = of_property_read_u32(pdev->dev.of_node,
"clock-frequency", &lpi2c_imx->bitrate);
@@ -582,11 +584,9 @@ static int lpi2c_imx_probe(struct platform_device *pdev)
i2c_set_adapdata(&lpi2c_imx->adapter, lpi2c_imx);
platform_set_drvdata(pdev, lpi2c_imx);
- ret = clk_prepare_enable(lpi2c_imx->clk);
- if (ret) {
- dev_err(&pdev->dev, "clk enable failed %d\n", ret);
+ ret = clk_bulk_prepare_enable(lpi2c_imx->num_clks, lpi2c_imx->clks);
+ if (ret)
return ret;
- }
pm_runtime_set_autosuspend_delay(&pdev->dev, I2C_PM_TIMEOUT);
pm_runtime_use_autosuspend(&pdev->dev);
@@ -633,7 +633,7 @@ static int __maybe_unused lpi2c_runtime_suspend(struct device *dev)
{
struct lpi2c_imx_struct *lpi2c_imx = dev_get_drvdata(dev);
- clk_disable_unprepare(lpi2c_imx->clk);
+ clk_bulk_disable_unprepare(lpi2c_imx->num_clks, lpi2c_imx->clks);
pinctrl_pm_select_sleep_state(dev);
return 0;
@@ -645,7 +645,7 @@ static int __maybe_unused lpi2c_runtime_resume(struct device *dev)
int ret;
pinctrl_pm_select_default_state(dev);
- ret = clk_prepare_enable(lpi2c_imx->clk);
+ ret = clk_bulk_prepare_enable(lpi2c_imx->num_clks, lpi2c_imx->clks);
if (ret) {
dev_err(dev, "failed to enable I2C clock, ret=%d\n", ret);
return ret;
--
2.37.1
On Tue, Aug 23, 2022 at 11:02:15AM +0800, Peng Fan (OSS) wrote:
> From: Peng Fan <[email protected]>
>
> The current driver only support one clock, however LPI2C requires
> two clocks: PER and IPG.
>
> To make sure old dts could work with newer kernel, use bulk clk
> API.
>
> Reviewed-by: Dong Aisheng <[email protected]>
> Signed-off-by: Peng Fan <[email protected]>
Applied to for-next, thanks!
Hi Wolfram,
> Subject: Re: [PATCH V3 7/7] i2c: imx-lpi2c: use bulk clk API
>
> On Tue, Aug 23, 2022 at 11:02:15AM +0800, Peng Fan (OSS) wrote:
> > From: Peng Fan <[email protected]>
> >
> > The current driver only support one clock, however LPI2C requires two
> > clocks: PER and IPG.
> >
> > To make sure old dts could work with newer kernel, use bulk clk API.
> >
> > Reviewed-by: Dong Aisheng <[email protected]>
> > Signed-off-by: Peng Fan <[email protected]>
>
> Applied to for-next, thanks!
Thanks, would you also pick up
Patch 2,3,4 in this patchset[1]?
[1] https://lore.kernel.org/all/[email protected]/
Thanks,
Peng.
> Thanks, would you also pick up
> Patch 2,3,4 in this patchset[1]?
Ah, they are already reviewed. Yes, will do. Thanks for the pointer!