Hi Linus,
This patch series adds pins, groups and functions for the 16-Bit Timer
Pulse Unit (TPU) outputs on the R-Car H3/M3-W/M3-N and RZ/G2M SoCs.
This has been tested on the Salvator-XS development board with R-Car
M3-N. As the TPU parts of the R-Car H3/M3-W and RZ/G2M SoCs are very
similar, I expect this to work on those SoCs, too.
Changes compared to v1:
- Update .common[] array sizes in pfc-r8a7796.c.
I intend to queue this in sh-pfc-for-v5.3.
Test procedure:
- Apply Cao Van Dong's series "[PATCH v2 0/5] Add TPU support for R-Car
H3/M3-W/M3-N"
(https://lore.kernel.org/linux-renesas-soc/1556155517-5054-1-git-send-email-cv-dong@xxxxxxxxxxx/),
- Make sure switches SW31-[1-4] are switched off,
- Enable TPU and pin control in DTS:
--- a/arch/arm64/boot/dts/renesas/salvator-xs.dtsi
+++ b/arch/arm64/boot/dts/renesas/salvator-xs.dtsi
@@ -27,3 +27,18 @@
clock-names = "xin";
};
};
+
+&tpu {
+ // SW31-[1-4] OFF
+ pinctrl-0 = <&tpu_pins>;
+ pinctrl-names = "default";
+
+ status = "okay";
+};
+
+&pfc {
+ tpu_pins: tpu {
+ groups = "tpu_to2", "tpu_to3";
+ function = "tpu";
+ };
+};
- Exercise userspace PWM control for pwm[23] of
/sys/class/pwm/pwmchip1/,
- Inspect PWM signals on the input side of SW31-[12] using an
oscilloscope,
- Disable TPU and pin control in DTS, and restore SW31 switch
settings.
Thanks!
Geert Uytterhoeven (4):
pinctrl: sh-pfc: r8a7795-es1: Add TPU pins, groups and functions
pinctrl: sh-pfc: r8a7795: Add TPU pins, groups and functions
pinctrl: sh-pfc: r8a7796: Add TPU pins, groups and functions
pinctrl: sh-pfc: r8a77965: Add TPU pins, groups and functions
drivers/pinctrl/sh-pfc/pfc-r8a7795-es1.c | 42 ++++++++++++++++++++++
drivers/pinctrl/sh-pfc/pfc-r8a7795.c | 42 ++++++++++++++++++++++
drivers/pinctrl/sh-pfc/pfc-r8a7796.c | 46 ++++++++++++++++++++++--
drivers/pinctrl/sh-pfc/pfc-r8a77965.c | 42 ++++++++++++++++++++++
4 files changed, 170 insertions(+), 2 deletions(-)
--
2.17.1
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
