On 1/31/2019 7:31 AM, Bjorn Andersson wrote:
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.anders...@linaro.org> --- Resending this separate from the series it was originally part of. drivers/amba/bus.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) 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)
Thanks. Tested-by: Sai Prakash Ranjan <saiprakash.ran...@codeaurora.org> -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
