-----Original Message-----
From: Biju Das [mailto:biju.das.jz@...]
Sent: Wednesday, July 29, 2020 7:56 PM
To: cip-dev@...; iwamatsu nobuhiro(岩松 信洋 □ＳＷＣ◯ＡＣＴ)
<nobuhiro1.iwamatsu@...>; Pavel Machek <pavel@...>
Cc: Chris Paterson <chris.paterson2@...>; Biju Das <biju.das.jz@...>; Prabhakar Mahadev Lad
<prabhakar.mahadev-lad.rj@...>
Subject: [PATCH 4.4.y-cip] ARM: dts: iwg22d-sodimm: Enable touchscreen

From: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@...>

commit 99ae78f1fc3a73c88fe726c676ae963ce722bf20 upstream.

In one of the iWave-G22D development board variants, called Generic SODIMM
Development Platform, we have an LCD with touchscreen. The resistive touch
controller, STMPE811 is on the development board and is connected through
the i2c5 of the RZ-G1E.

Additionally, this controller should generate an interrupt to the CPU and
it is connected through GPIO4,4 to the GIC.

Touch was tested with one of our iW-RainboW-G22D-SODIMM RZ/G1E development
platforms.

More details on the iWave website:
https://www.iwavesystems.com/rz-g1e-sodimm-development-kit.html

Signed-off-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@...>
Link: https://lore.kernel.org/r/1583336650-25848-1-git-send-email-marian-cristian.rotariu.rb@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@...>
Signed-off-by: Biju Das <biju.das.jz@...>

---
arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dts | 33 +++++++++++++++++++++
1 file changed, 33 insertions(+)

diff --git a/arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dts b/arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dts
index 1e331d1e414b..5cd989556b60 100644
--- a/arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dts
+++ b/arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dts
@@ -149,6 +149,39 @@
status = "okay";
clock-frequency = <400000>;

+ stmpe811@44 {
+ compatible = "st,stmpe811";
+ reg = <0x44>;
+ interrupt-parent = <&gpio4>;
+ interrupts = <4 IRQ_TYPE_LEVEL_LOW>;
+
+ /* 3.25 MHz ADC clock speed */
+ st,adc-freq = <1>;
+ /* ADC converstion time: 80 clocks */
+ st,sample-time = <4>;
+ /* 12-bit ADC */
+ st,mod-12b = <1>;
+ /* internal ADC reference */
+ st,ref-sel = <0>;
+
+ stmpe_touchscreen {
+ compatible = "st,stmpe-ts";
+ /* 8 sample average control */
+ st,ave-ctrl = <3>;
+ /* 7 length fractional part in z */
+ st,fraction-z = <7>;
+ /*
+ * 50 mA typical 80 mA max touchscreen drivers
+ * current limit value
+ */
+ st,i-drive = <1>;
+ /* 1 ms panel driver settling time */
+ st,settling = <3>;
+ /* 5 ms touch detect interrupt delay */
+ st,touch-det-delay = <5>;
+ };
+ };
+
sgtl5000: codec@a {
compatible = "fsl,sgtl5000";
#sound-dai-cells = <0>;
--
2.17.1

-----Original Message-----
From: Biju Das [mailto:biju.das.jz@...]
Sent: Thursday, July 30, 2020 4:11 PM
To: iwamatsu nobuhiro(岩松 信洋 □ＳＷＣ◯ＡＣＴ) <nobuhiro1.iwamatsu@...>; cip-dev@...
Cc: Chris Paterson <Chris.Paterson2@...>; Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@...>
Subject: RE: [PATCH 4.4.y-cip] ARM: dts: iwg22d-sodimm: Enable touchscreen

Hi Nobuhiro-san,

Thanks for the feedback.

Subject: RE: [PATCH 4.4.y-cip] ARM: dts: iwg22d-sodimm: Enable touchscreen

Hi,

-----Original Message-----
From: Biju Das [mailto:biju.das.jz@...]
Sent: Wednesday, July 29, 2020 7:56 PM
To: cip-dev@...; iwamatsu nobuhiro(岩松 信洋 □ＳＷＣ

◯ＡＣＴ)

<nobuhiro1.iwamatsu@...>; Pavel Machek <pavel@...>
Cc: Chris Paterson <chris.paterson2@...>; Biju Das
<biju.das.jz@...>; Prabhakar Mahadev Lad
<prabhakar.mahadev-lad.rj@...>
Subject: [PATCH 4.4.y-cip] ARM: dts: iwg22d-sodimm: Enable touchscreen

From: Marian-Cristian Rotariu
<marian-cristian.rotariu.rb@...>

commit 99ae78f1fc3a73c88fe726c676ae963ce722bf20 upstream.

In one of the iWave-G22D development board variants, called Generic
SODIMM Development Platform, we have an LCD with touchscreen. The
resistive touch controller, STMPE811 is on the development board and
is connected through the i2c5 of the RZ-G1E.

Additionally, this controller should generate an interrupt to the CPU
and it is connected through GPIO4,4 to the GIC.

Touch was tested with one of our iW-RainboW-G22D-SODIMM RZ/G1E
development platforms.

More details on the iWave website:
https://www.iwavesystems.com/rz-g1e-sodimm-development-kit.html

Signed-off-by: Marian-Cristian Rotariu
<marian-cristian.rotariu.rb@...>
Link:
https://lore.kernel.org/r/1583336650-25848-1-git-send-email-marian-cri
stian.rotariu.rb@...
Signed-off-by: Geert Uytterhoeven <geert+renesas@...>
Signed-off-by: Biju Das <biju.das.jz@...>

There seems to be no issue with this patch, but we also need to update
defcofnig.

We need to enable the below configs in shmobile_defconfig. Currently this configs are not enabled in
Mainline. Not sure we should upstream this and backport it or Just enable it in cip-kernel-config? Please let me know.

CONFIG_MFD_STMPE=y
CONFIG_STMPE_I2C=y
CONFIG_TOUCHSCREEN_STMPE=y

Cheers,
Biju


Renesas Electronics Europe GmbH, Geschaeftsfuehrer/President: Carsten Jauch, Sitz der Gesellschaft/Registered office:
Duesseldorf, Arcadiastrasse 10, 40472 Duesseldorf, Germany, Handelsregister/Commercial Register: Duesseldorf, HRB 3708
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-----Original Message-----
From: cip-dev@... [mailto:cip-dev@...] On Behalf Of Pavel Machek
Sent: Thursday, July 30, 2020 6:47 PM
To: iwamatsu nobuhiro(岩松 信洋 □ＳＷＣ◯ＡＣＴ) <nobuhiro1.iwamatsu@...>
Cc: biju.das.jz@...; cip-dev@...; pavel@...; chris.paterson2@...;
prabhakar.mahadev-lad.rj@...
Subject: Re: [cip-dev] [PATCH 4.4.y-cip] ARM: dts: iwg22d-sodimm: Enable touchscreen

Hi!

Subject: [PATCH 4.4.y-cip] ARM: dts: iwg22d-sodimm: Enable touchscreen

From: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@...>

commit 99ae78f1fc3a73c88fe726c676ae963ce722bf20 upstream.

There seems to be no issue with this patch, but we also need to update defcofnig.
If there is no other objection, I will apply this.

Patch looks good to me, too.

Best regards,
Pavel

--
DENX Software Engineering GmbH, Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany