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staging: clocking-wizard: Allow changing of parent rate for single output

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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>
This commit is contained in:
Shubhrajyoti Datta 2021-02-24 18:40:36 +05:30 committed by Greg Kroah-Hartman
parent 87a40bfb09
commit 92a7590427
1 changed files with 9 additions and 0 deletions
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9
drivers/staging/clocking-wizard/clk-xlnx-clock-wizard.c
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@ -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),