From: Aswath Govindraju <a-govindraju@ti.com>
To: unlisted-recipients:; (no To-header on input)
Cc: Vignesh Raghavendra <vigneshr@ti.com>,
Lokesh Vutla <lokeshvutla@ti.com>,
Kishon Vijay Abraham I <kishon@ti.com>,
Aswath Govindraju <a-govindraju@ti.com>,
Nishanth Menon <nm@ti.com>, Tero Kristo <kristo@kernel.org>,
Rob Herring <robh+dt@kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: [PATCH] arm64: dts: ti: k3-am65: Add support for UHS-I modes in MMCSD1 subsystem
Date: Wed, 7 Apr 2021 16:13:03 +0530 [thread overview]
Message-ID: <20210407104303.25950-1-a-govindraju@ti.com> (raw)
UHS-I speed modes are supported in AM65 S.R. 2.0 SoC[1].
Add support by removing the no-1-8-v tag and including the voltage
regulator device tree nodes for power cycling.
[1] - https://www.ti.com/lit/ug/spruid7e/spruid7e.pdf, section 12.3.6.1.1
Signed-off-by: Aswath Govindraju <a-govindraju@ti.com>
---
test logs:
https://pastebin.ubuntu.com/p/vpYbY9QWh8/
arch/arm64/boot/dts/ti/k3-am65-main.dtsi | 1 -
.../arm64/boot/dts/ti/k3-am654-base-board.dts | 33 +++++++++++++++++++
2 files changed, 33 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
index cb340d1b401f..632f32fce4a1 100644
--- a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
@@ -301,7 +301,6 @@
ti,otap-del-sel = <0x2>;
ti,trm-icp = <0x8>;
dma-coherent;
- no-1-8-v;
};
scm_conf: scm-conf@100000 {
diff --git a/arch/arm64/boot/dts/ti/k3-am654-base-board.dts b/arch/arm64/boot/dts/ti/k3-am654-base-board.dts
index 9e87fb313a54..6f7292b6fe0a 100644
--- a/arch/arm64/boot/dts/ti/k3-am654-base-board.dts
+++ b/arch/arm64/boot/dts/ti/k3-am654-base-board.dts
@@ -91,6 +91,38 @@
#clock-cells = <0>;
clock-frequency = <24000000>;
};
+
+ evm_12v0: fixedregulator-evm12v0 {
+ /* main supply */
+ compatible = "regulator-fixed";
+ regulator-name = "evm_12v0";
+ regulator-min-microvolt = <12000000>;
+ regulator-max-microvolt = <12000000>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ vcc3v3_io: fixedregulator-vcc3v3io {
+ /* Output of TPS54334 */
+ compatible = "regulator-fixed";
+ regulator-name = "vcc3v3_io";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-always-on;
+ regulator-boot-on;
+ vin-supply = <&evm_12v0>;
+ };
+
+ vdd_mmc1_sd: fixedregulator-sd {
+ compatible = "regulator-fixed";
+ regulator-name = "vdd_mmc1_sd";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
+ enable-active-high;
+ vin-supply = <&vcc3v3_io>;
+ gpio = <&pca9554 4 GPIO_ACTIVE_HIGH>;
+ };
};
&wkup_pmx0 {
@@ -350,6 +382,7 @@
* disable sdhci1
*/
&sdhci1 {
+ vmmc-supply = <&vdd_mmc1_sd>;
pinctrl-names = "default";
pinctrl-0 = <&main_mmc1_pins_default>;
ti,driver-strength-ohm = <50>;
--
2.17.1
next reply other threads:[~2021-04-07 10:43 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-07 10:43 Aswath Govindraju [this message]
2021-04-07 14:59 ` [PATCH] arm64: dts: ti: k3-am65: Add support for UHS-I modes in MMCSD1 subsystem Nishanth Menon
2021-04-07 15:13 ` Jan Kiszka
2021-04-07 15:30 ` Nishanth Menon
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