diff options
| author | Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com> | 2021-02-24 16:10:36 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-03-10 11:25:30 +0300 |
| commit | 92a7590427d6661bc657c08624355db6c3874b9a (patch) | |
| tree | b1619d5c702ca17f8d2c827b40e6181342463a8f /drivers | |
| parent | 87a40bfb09f213b433ef137eed73b365b808a784 (diff) | |
| download | linux-92a7590427d6661bc657c08624355db6c3874b9a.tar.xz | |
staging: clocking-wizard: Allow changing of parent rate for single output
If there is only one output then allow changing of the parent rate.
Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Link: https://lore.kernel.org/r/1614172241-17326-5-git-send-email-shubhrajyoti.datta@xilinx.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/staging/clocking-wizard/clk-xlnx-clock-wizard.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/staging/clocking-wizard/clk-xlnx-clock-wizard.c b/drivers/staging/clocking-wizard/clk-xlnx-clock-wizard.c index 9cc2f6d0751a..e08fc2fcc491 100644 --- a/drivers/staging/clocking-wizard/clk-xlnx-clock-wizard.c +++ b/drivers/staging/clocking-wizard/clk-xlnx-clock-wizard.c @@ -138,6 +138,7 @@ static int clk_wzrd_probe(struct platform_device *pdev) void __iomem *ctrl_reg; struct clk_wzrd *clk_wzrd; struct device_node *np = pdev->dev.of_node; + int nr_outputs; unsigned long flags = 0; clk_wzrd = devm_kzalloc(&pdev->dev, sizeof(*clk_wzrd), GFP_KERNEL); @@ -201,6 +202,14 @@ static int clk_wzrd_probe(struct platform_device *pdev) goto err_disable_clk; } + ret = of_property_read_u32(np, "nr-outputs", &nr_outputs); + if (ret || nr_outputs > WZRD_NUM_OUTPUTS) { + ret = -EINVAL; + goto err_disable_clk; + } + if (nr_outputs == 1) + flags = CLK_SET_RATE_PARENT; + clk_wzrd->clks_internal[wzrd_clk_mul] = clk_register_fixed_factor (&pdev->dev, clk_name, __clk_get_name(clk_wzrd->clk_in1), |