| Message ID | 20220307111413.8903-1-miquel.raynal@bootlin.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | ARM: dts: am33xx-l4: Add missing touchscreen clock properties | expand |
diff --git a/arch/arm/boot/dts/am33xx-l4.dtsi b/arch/arm/boot/dts/am33xx-l4.dtsi index c9629cb5ccd1..7da42a5b959c 100644 --- a/arch/arm/boot/dts/am33xx-l4.dtsi +++ b/arch/arm/boot/dts/am33xx-l4.dtsi @@ -263,6 +263,8 @@ tscadc: tscadc@0 { compatible = "ti,am3359-tscadc"; reg = <0x0 0x1000>; interrupts = <16>; + clocks = <&adc_tsc_fck>; + clock-names = "fck"; status = "disabled"; dmas = <&edma 53 0>, <&edma 57 0>; dma-names = "fifo0", "fifo1";
When adding support for TI magadc, the MFD driver (common to the touchscreen and the ADC) got updated to ease the insertion of a new DT node for the ADC, with its own compatible, clocks, etc. Commit 235a96e92c16 ("mfd: ti_am335x_tscadc: Don't search the tree for our clock") removed one compatible specific information which was the clock name, because the clock was looked up from scratch in the DT while this hardware block was only fed by a single clock, already defined and properly filled in the DT. Problem is, this change was only validated with an am437x-based board, where the clocks are effectively correctly defined and referenced. But on am33xx, the ADC clock is also correctly defined but is not referenced with a clock phandle as it out to be. The touchscreen bindings clearly state that the clocks/clock-names properties are mandatory, but they have been forgotten in one DTSI. This was probably not noticed in the first place because of the clock actually existing and the clk_get() call going through all the tree anyway. Add the missing clock phandles in the am33xx touchscreen description. Reported-by: H. Nikolaus Schaller <hns@goldelico.com> Fixes: 235a96e92c16 ("mfd: ti_am335x_tscadc: Don't search the tree for our clock") Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> --- Hello Nikolaus, as I told you I don't have the relevant hardware to verify that this actually fixes your situation but I am rather confident. Could you please give this a try? Thanks! Miquel arch/arm/boot/dts/am33xx-l4.dtsi | 2 ++ 1 file changed, 2 insertions(+)