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Use it if the DTS provides that. Signed-off-by: Liu Ying Signed-off-by: Frank Li --- Change from v2 to v3 - use buck clk API Change from v1 to v2 - remove if check for clk - use dev_err_probe - remove int val --- drivers/pwm/pwm-imx27.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/drivers/pwm/pwm-imx27.c b/drivers/pwm/pwm-imx27.c index ce9208540f1b8..2a9fba6f9d0a8 100644 --- a/drivers/pwm/pwm-imx27.c +++ b/drivers/pwm/pwm-imx27.c @@ -81,10 +81,11 @@ #define MX3_PWMPR_MAX 0xfffe static const char * const pwm_imx27_clks[] = {"ipg", "per"}; +static const char * const pwm_imx27_opt_clks[] = {"32k"}; #define PWM_IMX27_PER 1 struct pwm_imx27_chip { - struct clk_bulk_data clks[ARRAY_SIZE(pwm_imx27_clks)]; + struct clk_bulk_data clks[ARRAY_SIZE(pwm_imx27_clks) + ARRAY_SIZE(pwm_imx27_opt_clks)]; int clks_cnt; void __iomem *mmio_base; @@ -371,6 +372,16 @@ static int pwm_imx27_probe(struct platform_device *pdev) return dev_err_probe(&pdev->dev, ret, "getting clocks failed\n"); + for (i = 0; i < ARRAY_SIZE(pwm_imx27_opt_clks); i++) + imx->clks[i + imx->clks_cnt].id = pwm_imx27_opt_clks[i]; + + ret = devm_clk_bulk_get_optional(&pdev->dev, ARRAY_SIZE(pwm_imx27_opt_clks), + imx->clks + imx->clks_cnt); + if (ret) + return dev_err_probe(&pdev->dev, ret, "get optional clocks failed\n"); + + imx->clks_cnt += ARRAY_SIZE(pwm_imx27_opt_clks); + chip->ops = &pwm_imx27_ops; imx->mmio_base = devm_platform_ioremap_resource(pdev, 0);