Dear Simon-san,
On 2019/04/26 18:41, Simon Horman wrote:
Hi,
On Thu, Apr 25, 2019 at 10:25:12AM +0900, Cao Van Dong wrote:
This series adds tpu support for r8a7795/r8a7796/r8a77965 SoCs.
Based on the renesas-drivers-2019-04-02-v5.1-rc3 tag of renesas-drivers tree.
For test, after booting, I found the device was registered in the booting log.
Could you clarify some details of this test.
Looking at the DTS patches I see 'status = "disabled";' for each
of the newly added devices. So I would not expect them to be probed
at run-time without some extra tweaking.
Test procedure:
- Apply patch series "[PATCH 0/4] pinctrl: sh-pfc: r8a7795/6/65: Add
TPU pins, groups and functions".
- Make sure switches { SW29-[1-2] are switched off or SW31-[1-4] are
switched off(only for Salvator-xs) }.
- Enable TPU and pin control in DTS (salvator-x/xs.dtsi):
+
+&tpu {
+ 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[2,3] of
/sys/class/pwm/pwmchip1/ .
- Inspect PWM signals on the input side of { CN29-[58,60] or
SW31-[1,2] (only for Salvator-xs) } using an oscilloscope.
Thank you,
Dong
Cao Van Dong (5):
clk: renesas: r8a779{5|6|65}: Add TPU clock
arm64: dts: renesas: r8a7795: Add TPU support
arm64: dts: renesas: r8a7796: Add TPU support
arm64: dts: renesas: r8a77965: Add TPU support
dt-bindings: pwm: renesas: tpu: Document R8A779{5|6|65} bindings
Documentation/devicetree/bindings/pwm/renesas,tpu-pwm.txt | 3 +++
arch/arm64/boot/dts/renesas/r8a7795.dtsi | 11 +++++++++++
arch/arm64/boot/dts/renesas/r8a7796.dtsi | 11 +++++++++++
arch/arm64/boot/dts/renesas/r8a77965.dtsi | 11 +++++++++++
drivers/clk/renesas/r8a7795-cpg-mssr.c | 1 +
drivers/clk/renesas/r8a7796-cpg-mssr.c | 1 +
drivers/clk/renesas/r8a77965-cpg-mssr.c | 1 +
7 files changed, 39 insertions(+)
--
2.7.4
