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Subject[PATCH v1] clk: keystone: syscon-clk: Fix audio refclk
Date
From: Francesco Dolcini <francesco.dolcini@toradex.com>

Audio REFCLK's are not working correctly, trying to use them lead to the
following errors:

[ 6.575277] of_clk_hw_onecell_get: invalid index 4294934528
[ 6.581515] wm8904 1-001a: Failed to get MCLK
[ 6.586290] wm8904: probe of 1-001a failed with error -2

The issue is that Audio REFCLK has #clock-cells = 0 [1], while the driver
is registering those clocks assuming they have one cells. Fix this by
registering the clock with of_clk_hw_simple_get() when there is only one
instance, e.g. "audio_refclk".

[1] Documentation/devicetree/bindings/clock/ti,am62-audio-refclk.yaml

Fixes: 6acab96ee337 ("clk: keystone: syscon-clk: Add support for audio refclk")
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
---
drivers/clk/keystone/syscon-clk.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/keystone/syscon-clk.c b/drivers/clk/keystone/syscon-clk.c
index d33f74119488..6b335ce5cc26 100644
--- a/drivers/clk/keystone/syscon-clk.c
+++ b/drivers/clk/keystone/syscon-clk.c
@@ -151,8 +151,12 @@ static int ti_syscon_gate_clk_probe(struct platform_device *pdev)
data[i].name);
}

- return devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get,
- hw_data);
+ if (num_clks == 1)
+ return devm_of_clk_add_hw_provider(dev, of_clk_hw_simple_get,
+ hw_data->hws[0]);
+ else
+ return devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get,
+ hw_data);
}

#define TI_SYSCON_CLK_GATE(_name, _offset, _bit_idx) \
--
2.25.1
\
 
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