On 12/08/2022 07:34, Peng Fan (OSS) wrote:
> From: Peng Fan <peng.fan@xxxxxxx>
>
> The LPI2C controller needs both PER and IPG clock to work, but current
> driver only supports PER clock. This patch add IPG clock.
>
> Signed-off-by: Peng Fan <peng.fan@xxxxxxx>
> ---
> drivers/i2c/busses/i2c-imx-lpi2c.c | 41 ++++++++++++++++++++++--------
> 1 file changed, 31 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/i2c/busses/i2c-imx-lpi2c.c b/drivers/i2c/busses/i2c-imx-lpi2c.c
> index 8b9ba055c418..f43ad1ae8627 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;
> + struct clk *clk_per;
> + struct clk *clk_ipg;
> 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->clk_per);
> if (lpi2c_imx->mode == HS || lpi2c_imx->mode == ULTRA_FAST)
> filt = 0;
> else
> @@ -561,10 +562,16 @@ static int lpi2c_imx_probe(struct platform_device *pdev)
> strlcpy(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)) {
> + lpi2c_imx->clk_per = devm_clk_get(&pdev->dev, "per");
> + if (IS_ERR(lpi2c_imx->clk_per)) {
> dev_err(&pdev->dev, "can't get I2C peripheral clock\n");
> - return PTR_ERR(lpi2c_imx->clk);
> + return PTR_ERR(lpi2c_imx->clk_per);
> + }
> +
> + lpi2c_imx->clk_ipg = devm_clk_get(&pdev->dev, "ipg");
> + if (IS_ERR(lpi2c_imx->clk_ipg)) {
> + dev_err(&pdev->dev, "can't get I2C ipg clock\n");
> + return PTR_ERR(lpi2c_imx->clk_ipg);
> }
You just broke all DTS...
Best regards,
Krzysztof
