i2s0 fails to probe on my Radxa ROCK 4SE and ROCK Pi 4B boards with:
rockchip-pinctrl pinctrl: pin gpio3-29 already requested by leds; cannot claim for ff880000.i2s
rockchip-pinctrl pinctrl: pin-125 (ff880000.i2s) status -22
rockchip-pinctrl pinctrl: could not request pin 125 (gpio3-29) from group i2s0-8ch-bus-bclk-off on device rockchip-pinctrl
rockchip-i2s ff880000.i2s: Error applying setting, reverse things back
rockchip-i2s ff880000.i2s: bclk disable failed -22
This is due to the pinctl attempting to request a GPIO which the boards
use for a different function.
The first patch adds a missing pinctl node i2s0_2ch_bus_bclk_off to the
RK3399 devicetree.
The second patch sets the i2s0 pinctrl to use the new node when idle and
fixes the issue.
Christopher Obbard (2):
arm64: dts: rockchip: Add i2s0-2ch-bus-bclk-off pins to RK3399
arm64: dts: rockchip: Fix i2s0 pin conflict on ROCK Pi 4 boards
arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi | 1 +
arch/arm64/boot/dts/rockchip/rk3399.dtsi | 10 ++++++++++
2 files changed, 11 insertions(+)
--
2.42.0
Commit 0efaf8078393 ("arm64: dts: rockchip: add i2s0-2ch-bus pins on
rk3399") introduced a pinctl for i2s0 in two-channel mode. Commit
91419ae0420f ("arm64: dts: rockchip: use BCLK to GPIO switch on rk3399")
modified i2s0 to switch the corresponding pins off when idle.
Although an idle pinctrl node was added for i2s0 in 8-channel mode, a
similar idle pinctrl node for i2s0 in 2-channel mode was not added. Add
it.
Fixes: 91419ae0420f ("arm64: dts: rockchip: use BCLK to GPIO switch on rk3399")
Signed-off-by: Christopher Obbard <[email protected]>
---
arch/arm64/boot/dts/rockchip/rk3399.dtsi | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
index 9da0b6d77c8d2..5bc2d4faeea6d 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
@@ -2457,6 +2457,16 @@ i2s0_2ch_bus: i2s0-2ch-bus {
<4 RK_PA0 1 &pcfg_pull_none>;
};
+ i2s0_2ch_bus_bclk_off: i2s0-2ch-bus-bclk-off {
+ rockchip,pins =
+ <3 RK_PD0 RK_FUNC_GPIO &pcfg_pull_none>,
+ <3 RK_PD1 1 &pcfg_pull_none>,
+ <3 RK_PD2 1 &pcfg_pull_none>,
+ <3 RK_PD3 1 &pcfg_pull_none>,
+ <3 RK_PD7 1 &pcfg_pull_none>,
+ <4 RK_PA0 1 &pcfg_pull_none>;
+ };
+
i2s0_8ch_bus: i2s0-8ch-bus {
rockchip,pins =
<3 RK_PD0 1 &pcfg_pull_none>,
--
2.42.0
Commit 91419ae0420f ("arm64: dts: rockchip: use BCLK to GPIO switch on
rk3399") modified i2s0 to switch the corresponding pins off when idle.
For the ROCK Pi 4 boards, this means that i2s0 has the following pinctrl
setting:
pinctrl-names = "bclk_on", "bclk_off";
pinctrl-0 = <&i2s0_2ch_bus>;
pinctrl-1 = <&i2s0_8ch_bus_bclk_off>;
Due to this change, i2s0 fails to probe on my Radxa ROCK 4SE and ROCK Pi
4B boards:
rockchip-pinctrl pinctrl: pin gpio3-29 already requested by leds; cannot claim for ff880000.i2s
rockchip-pinctrl pinctrl: pin-125 (ff880000.i2s) status -22
rockchip-pinctrl pinctrl: could not request pin 125 (gpio3-29) from group i2s0-8ch-bus-bclk-off on device rockchip-pinctrl
rockchip-i2s ff880000.i2s: Error applying setting, reverse things back
rockchip-i2s ff880000.i2s: bclk disable failed -22
A pin requested for i2s0_8ch_bus_bclk_off has already been requested by
user_led2, so whichever driver probes first will have the pin allocated.
The hardware uses 2-channel i2s so fix this error by setting pinctl-1 to
i2s0_2ch_bus_bclk_off which doesn't contain the pin allocated to user_led2.
I checked the schematics for all Radxa boards based on ROCK Pi 4 and this
change is compatible with all boards.
Fixes: 91419ae0420f ("arm64: dts: rockchip: use BCLK to GPIO switch on rk3399")
Signed-off-by: Christopher Obbard <[email protected]>
---
arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi
index 7dccbe8a93930..f2279aa6ca9e1 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi
@@ -492,6 +492,7 @@ &i2c4 {
&i2s0 {
pinctrl-0 = <&i2s0_2ch_bus>;
+ pinctrl-1 = <&i2s0_2ch_bus_bclk_off>;
rockchip,capture-channels = <2>;
rockchip,playback-channels = <2>;
status = "okay";
--
2.42.0
On Fri Oct 13, 2023 at 1:47 PM CEST, Christopher Obbard wrote:
> i2s0 fails to probe on my Radxa ROCK 4SE and ROCK Pi 4B boards with:
>
> rockchip-pinctrl pinctrl: pin gpio3-29 already requested by leds; cannot claim for ff880000.i2s
> rockchip-pinctrl pinctrl: pin-125 (ff880000.i2s) status -22
> rockchip-pinctrl pinctrl: could not request pin 125 (gpio3-29) from group i2s0-8ch-bus-bclk-off on device rockchip-pinctrl
> rockchip-i2s ff880000.i2s: Error applying setting, reverse things back
> rockchip-i2s ff880000.i2s: bclk disable failed -22
>
> This is due to the pinctl attempting to request a GPIO which the boards
> use for a different function.
>
> The first patch adds a missing pinctl node i2s0_2ch_bus_bclk_off to the
> RK3399 devicetree.
>
> The second patch sets the i2s0 pinctrl to use the new node when idle and
> fixes the issue.
>
>
> Christopher Obbard (2):
> arm64: dts: rockchip: Add i2s0-2ch-bus-bclk-off pins to RK3399
> arm64: dts: rockchip: Fix i2s0 pin conflict on ROCK Pi 4 boards
>
> arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi | 1 +
> arch/arm64/boot/dts/rockchip/rk3399.dtsi | 10 ++++++++++
> 2 files changed, 11 insertions(+)
Thanks, works as advertised on my Rock 4SE!
So for the entire series:
Tested-By: Folker Schwesinger <[email protected]>
Kind regards,
Folker
On Fri, 13 Oct 2023 12:47:25 +0100, Christopher Obbard wrote:
> i2s0 fails to probe on my Radxa ROCK 4SE and ROCK Pi 4B boards with:
>
> rockchip-pinctrl pinctrl: pin gpio3-29 already requested by leds; cannot claim for ff880000.i2s
> rockchip-pinctrl pinctrl: pin-125 (ff880000.i2s) status -22
> rockchip-pinctrl pinctrl: could not request pin 125 (gpio3-29) from group i2s0-8ch-bus-bclk-off on device rockchip-pinctrl
> rockchip-i2s ff880000.i2s: Error applying setting, reverse things back
> rockchip-i2s ff880000.i2s: bclk disable failed -22
>
> [...]
Applied, thanks!
[1/2] arm64: dts: rockchip: Add i2s0-2ch-bus-bclk-off pins to RK3399
commit: 3975e72b164dc8347a28dd0d5f11b346af534635
[2/2] arm64: dts: rockchip: Fix i2s0 pin conflict on ROCK Pi 4 boards
commit: 8cd79b729e746cb167f1563d015a93fc0a079899
Best regards,
--
Heiko Stuebner <[email protected]>