From: Linus Walleij <linus.walleij@linaro.org>
To: linux-arm-msm@vger.kernel.org, Andy Gross <agross@kernel.org>,
Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konrad.dybcio@somainline.org>
Cc: linux-arm-kernel@lists.infradead.org,
Herman van Hazendonk <me@herrie.org>,
Linus Walleij <linus.walleij@linaro.org>
Subject: [PATCH 3/3] ARM: dts: qcom: Add TMA340 to APQ8060 DragonBoard
Date: Tue, 13 Sep 2022 15:28:46 +0200 [thread overview]
Message-ID: <20220913132846.305716-3-linus.walleij@linaro.org> (raw)
In-Reply-To: <20220913132846.305716-1-linus.walleij@linaro.org>
This adds the CY8CTMA340 Touchscreen to the APQ8060 DragonBoard.
Tested without display by issuing cat /dev/input/input/event3
which produces appropriate noise and interrupts on the dedicated
GPIO line.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
.../arm/boot/dts/qcom-apq8060-dragonboard.dts | 71 ++++++++++++++++++-
1 file changed, 70 insertions(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/qcom-apq8060-dragonboard.dts b/arch/arm/boot/dts/qcom-apq8060-dragonboard.dts
index 70a1dd629c7a..b07a0ba9e734 100644
--- a/arch/arm/boot/dts/qcom-apq8060-dragonboard.dts
+++ b/arch/arm/boot/dts/qcom-apq8060-dragonboard.dts
@@ -159,6 +159,19 @@ data {
};
};
+ dragon_gsbi3_i2c_pins: gsbi3_i2c {
+ mux {
+ pins = "gpio43", "gpio44";
+ function = "gsbi3";
+ };
+ pinconf {
+ pins = "gpio43", "gpio44";
+ drive-strength = <8>;
+ /* These have external pull-up 2.2kOhm to 1.8V */
+ bias-disable;
+ };
+ };
+
dragon_gsbi8_i2c_pins: gsbi8_i2c {
mux {
pins = "gpio64", "gpio65";
@@ -240,6 +253,22 @@ irq {
bias-pull-up;
};
};
+
+ dragon_tma340_gpios: tma340 {
+ reset {
+ /* RESET line, TS_ATTN, WAKE_CTP */
+ pins = "gpio58";
+ function = "gpio";
+ drive-strength = <6>;
+ bias-disable;
+ };
+ irq {
+ pins = "gpio61"; /* IRQ line */
+ function = "gpio";
+ drive-strength = <2>;
+ bias-pull-up;
+ };
+ };
};
qcom,ssbi@500000 {
@@ -444,6 +473,45 @@ led@133 {
};
};
+ gsbi@16200000 {
+ status = "okay";
+ qcom,mode = <GSBI_PROT_I2C>;
+
+ gsbi3_i2c: i2c@16280000 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&dragon_gsbi3_i2c_pins>;
+
+ touchscreen@24 {
+ compatible = "cypress,cy8ctma340";
+ reg = <0x24>;
+ /* Certainly we can do at least 400 kHz */
+ clock-frequency = <400000>;
+ /* IRQ on GPIO61 called /CTP_INT */
+ interrupt-parent = <&tlmm>;
+ interrupts = <61 IRQ_TYPE_EDGE_FALLING>;
+ /*
+ * The I2C bus is using a PCA9306 level translator from L16A
+ * to L2B so these two voltages are needed and L16A is
+ * kind of the IO voltage, however L16Aisn't really fed to
+ * the TMA340, which relies entirely on L2B (PM8901 L2).
+ */
+ vcpin-supply = <&pm8058_l16>;
+ vdd-supply = <&pm8901_l2>;
+ /* GPIO58, called WAKE_CTP */
+ reset-gpios = <&tlmm 58 GPIO_ACTIVE_LOW>;
+ touchscreen-size-x = <480>;
+ touchscreen-size-y = <800>;
+ active-interval-ms = <0>;
+ touch-timeout-ms = <255>;
+ lowpower-interval-ms = <10>;
+ bootloader-key = /bits/ 8 <0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&dragon_tma340_gpios>;
+ };
+ };
+ };
+
gsbi@19800000 {
status = "okay";
qcom,mode = <GSBI_PROT_I2C>;
@@ -634,7 +702,8 @@ l1 {
bias-pull-down;
};
l2 {
- regulator-min-microvolt = <2850000>;
+ /* TMA340 requires strictly 3.3V */
+ regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
bias-pull-down;
};
--
2.37.3
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2022-09-13 13:30 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-13 13:28 [PATCH 1/3] ARM: dts: qcom-msm8660: Add GSBI1 SPI bus Linus Walleij
2022-09-13 13:28 ` [PATCH 2/3] ARM: dts: qcom-msm8660: Add GSBI3 I2C bus Linus Walleij
2022-09-13 13:28 ` Linus Walleij [this message]
2022-09-13 15:17 ` (subset) [PATCH 1/3] ARM: dts: qcom-msm8660: Add GSBI1 SPI bus Bjorn Andersson
-- strict thread matches above, loose matches on Subject: below --
2022-09-13 13:14 Linus Walleij
2022-09-13 13:14 ` [PATCH 3/3] ARM: dts: qcom: Add TMA340 to APQ8060 DragonBoard Linus Walleij
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220913132846.305716-3-linus.walleij@linaro.org \
--to=linus.walleij@linaro.org \
--cc=agross@kernel.org \
--cc=andersson@kernel.org \
--cc=konrad.dybcio@somainline.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-arm-msm@vger.kernel.org \
--cc=me@herrie.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).