From: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
To: <devicetree@vger.kernel.org>
Cc: devel@driverdev.osuosl.org, shubhrajyoti.datta@gmail.com,
sboyd@kernel.org, gregkh@linuxfoundation.org,
mturquette@baylibre.com,
Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>,
robh+dt@kernel.org, git@xilinx.com, miquel.raynal@bootlin.com,
linux-clk@vger.kernel.org
Subject: [PATCH v10 4/9] staging: clocking-wizard: Allow changing of parent rate for single output
Date: Wed, 24 Feb 2021 18:40:36 +0530 [thread overview]
Message-ID: <1614172241-17326-5-git-send-email-shubhrajyoti.datta@xilinx.com> (raw)
In-Reply-To: <1614172241-17326-1-git-send-email-shubhrajyoti.datta@xilinx.com>
If there is only one output then allow changing of the parent rate.
Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
---
drivers/staging/clocking-wizard/clk-xlnx-clock-wizard.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/staging/clocking-wizard/clk-xlnx-clock-wizard.c b/drivers/staging/clocking-wizard/clk-xlnx-clock-wizard.c
index 9cc2f6d..e08fc2f 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),
--
2.1.1
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next prev parent reply other threads:[~2021-02-24 13:44 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-24 13:10 [PATCH v10 0/9] clk: clocking-wizard: driver updates Shubhrajyoti Datta
2021-02-24 13:10 ` [PATCH v10 1/9] staging: clocking-wizard: Fix kernel-doc warning Shubhrajyoti Datta
2021-02-24 13:10 ` [PATCH v10 2/9] staging: clocking-wizard: Rename speed-grade to xlnx, speed-grade Shubhrajyoti Datta
2021-02-24 13:10 ` [PATCH v10 3/9] staging: clocking-wizard: Update the fixed factor divisors Shubhrajyoti Datta
2021-02-24 13:10 ` Shubhrajyoti Datta [this message]
2021-02-24 13:10 ` [PATCH v10 5/9] staging: clocking-wizard: Add support for dynamic reconfiguration Shubhrajyoti Datta
2021-02-24 13:10 ` [PATCH v10 6/9] staging: clocking-wizard: Add support for fractional support Shubhrajyoti Datta
2021-02-24 13:10 ` [PATCH v10 7/9] staging: clocking-wizard: Remove the hardcoding of the clock outputs Shubhrajyoti Datta
2021-02-24 13:10 ` [PATCH v10 8/9] dt-bindings: add documentation of xilinx clocking wizard Shubhrajyoti Datta
2021-03-06 20:20 ` Rob Herring
2021-04-08 10:26 ` Shubhrajyoti Datta
2021-04-08 10:40 ` Michal Simek
2021-04-09 23:32 ` Stephen Boyd
2021-05-13 6:48 ` Shubhrajyoti Datta
2021-02-24 13:10 ` [PATCH v10 9/9] clk: clock-wizard: Add the clockwizard to clk directory Shubhrajyoti Datta
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