[PATCH v2 04/14] sata: ahci-da850: get the sata clock using a connector id
From: Sergei Shtylyov <hidden>
Date: 2017-01-17 16:03:01
Also in:
linux-devicetree, linux-ide, lkml
Hello! On 01/17/2017 03:26 PM, Bartosz Golaszewski wrote:
In preparation for using two clocks in the driver (the sysclk2-based clock and the external REFCLK), check if we got a functional clock after calling ahci_platform_get_resources(). If not, retry calling get_clk() with con_id specified.
clk_get().
quoted hunk ↗ jump to hunk
Signed-off-by: Bartosz Golaszewski <redacted> --- drivers/ata/ahci_da850.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)diff --git a/drivers/ata/ahci_da850.c b/drivers/ata/ahci_da850.c index 267a3d3..18f57c2 100644 --- a/drivers/ata/ahci_da850.c +++ b/drivers/ata/ahci_da850.c@@ -71,12 +71,28 @@ static int ahci_da850_probe(struct platform_device *pdev) struct ahci_host_priv *hpriv; struct resource *res; void __iomem *pwrdn_reg; + struct clk *clk; int rc; hpriv = ahci_platform_get_resources(pdev); if (IS_ERR(hpriv)) return PTR_ERR(hpriv); + /* + * Internally ahci_platform_get_resources() calls clk_get(dev, NULL) + * when trying to obtain the first clock. This SATA controller uses + * two clocks for which we specify two connector ids. If we don't
It's called connection ID, IIRC.
[...]
MBR, Sergei