| Message ID | 20190106080915.4493-7-bjorn.andersson@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | Qualcomm AOSS QMP side channel binding and driver | expand |
diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c index 41b706403ef7..3e13050c6d59 100644 --- a/drivers/amba/bus.c +++ b/drivers/amba/bus.c @@ -219,8 +219,13 @@ static int amba_get_enable_pclk(struct amba_device *pcdev) int ret; pcdev->pclk = clk_get(&pcdev->dev, "apb_pclk"); - if (IS_ERR(pcdev->pclk)) - return PTR_ERR(pcdev->pclk); + if (IS_ERR(pcdev->pclk)) { + /* Continue with no clock specified, but pm_domain attached */ + if (PTR_ERR(pcdev->pclk) == -ENOENT && pcdev->dev.pm_domain) + pcdev->pclk = NULL; + else + return PTR_ERR(pcdev->pclk); + } ret = clk_prepare_enable(pcdev->pclk); if (ret)
On the Qualcomm SDM845 platform the apb_pclk is controlled as part of the QDSS power/clock domain. Handle this by allowing amba to operate without direct apb_pclk control, when a powerdomain is attached and no clock is described. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> --- Changes since v1: - New patch drivers/amba/bus.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) -- 2.18.0