arm64: dts: qcom: Add device tree for Samsung Galaxy A3U/A5U

Samsung Galaxy A3 (SM-A300FU) and Samsung Galaxy A5 (SM-A500FU)
are smartphones using the MSM8916 SoC released in 2015.

Add a device tree for A3U and A5U with initial support for:
  - SDHCI (internal and external storage)
  - USB Device Mode
  - UART (on USB connector via the SM5502 MUIC)
  - Regulators

The two devices (and all other variants of A3/A5 released in 2015)
are very similar, with some differences in display, touchscreen
and sensors. The common parts are shared in
msm8916-samsung-a2015-common.dtsi to reduce duplication.

The device tree is loosely based on apq8016-sbc.dtsi and the
downstream kernel provided by Samsung, mixed with a lot of own
research.

Co-developed-by: Michael Srba <Michael.Srba@seznam.cz>
Signed-off-by: Michael Srba <Michael.Srba@seznam.cz>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
index 954d75d..9189996 100644 (file)
--- a/arch/arm64/boot/dts/qcom/Makefile
+++ b/arch/arm64/boot/dts/qcom/Makefile
@@ -3,6 +3,8 @@ dtb-$(CONFIG_ARCH_QCOM) += apq8016-sbc.dtb
 dtb-$(CONFIG_ARCH_QCOM)        += apq8096-db820c.dtb
 dtb-$(CONFIG_ARCH_QCOM)        += ipq8074-hk01.dtb
 dtb-$(CONFIG_ARCH_QCOM)        += msm8916-mtp.dtb
+dtb-$(CONFIG_ARCH_QCOM)        += msm8916-samsung-a3u-eur.dtb
+dtb-$(CONFIG_ARCH_QCOM)        += msm8916-samsung-a5u-eur.dtb
 dtb-$(CONFIG_ARCH_QCOM)        += msm8992-bullhead-rev-101.dtb
 dtb-$(CONFIG_ARCH_QCOM)        += msm8994-angler-rev-101.dtb
 dtb-$(CONFIG_ARCH_QCOM)        += msm8996-mtp.dtb

diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi b/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
new file mode 100644 (file)
index 0000000..e675ff4
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
@@ -0,0 +1,236 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include "msm8916.dtsi"
+#include "pm8916.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+
+/ {
+       aliases {
+               serial0 = &blsp1_uart2;
+       };
+
+       chosen {
+               stdout-path = "serial0";
+       };
+
+       soc {
+               sdhci@7824000 {
+                       status = "okay";
+
+                       vmmc-supply = <&pm8916_l8>;
+                       vqmmc-supply = <&pm8916_l5>;
+
+                       pinctrl-names = "default", "sleep";
+                       pinctrl-0 = <&sdc1_clk_on &sdc1_cmd_on &sdc1_data_on>;
+                       pinctrl-1 = <&sdc1_clk_off &sdc1_cmd_off &sdc1_data_off>;
+               };
+
+               sdhci@7864000 {
+                       status = "okay";
+
+                       vmmc-supply = <&pm8916_l11>;
+                       vqmmc-supply = <&pm8916_l12>;
+
+                       pinctrl-names = "default", "sleep";
+                       pinctrl-0 = <&sdc2_clk_on &sdc2_cmd_on &sdc2_data_on &sdc2_cd_on>;
+                       pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off &sdc2_cd_off>;
+
+                       cd-gpios = <&msmgpio 38 GPIO_ACTIVE_LOW>;
+               };
+
+               serial@78b0000 {
+                       status = "okay";
+                       pinctrl-names = "default", "sleep";
+                       pinctrl-0 = <&blsp1_uart2_default>;
+                       pinctrl-1 = <&blsp1_uart2_sleep>;
+               };
+
+               usb@78d9000 {
+                       status = "okay";
+                       extcon = <&muic>, <&muic>;
+
+                       hnp-disable;
+                       srp-disable;
+                       adp-disable;
+
+                       ulpi {
+                               phy {
+                                       extcon = <&muic>;
+                                       v1p8-supply = <&pm8916_l7>;
+                                       v3p3-supply = <&pm8916_l13>;
+                               };
+                       };
+               };
+
+               /*
+                * Attempting to enable these devices causes a "synchronous
+                * external abort". Suspected cause is that the debug power
+                * domain is not enabled by default on this device.
+                * Disable these devices for now to avoid the crash.
+                *
+                * See: https://lore.kernel.org/linux-arm-msm/20190618202623.GA53651@gerhold.net/
+                */
+               tpiu@820000 { status = "disabled"; };
+               funnel@821000 { status = "disabled"; };
+               replicator@824000 { status = "disabled"; };
+               etf@825000 { status = "disabled"; };
+               etr@826000 { status = "disabled"; };
+               funnel@841000 { status = "disabled"; };
+               debug@850000 { status = "disabled"; };
+               debug@852000 { status = "disabled"; };
+               debug@854000 { status = "disabled"; };
+               debug@856000 { status = "disabled"; };
+               etm@85c000 { status = "disabled"; };
+               etm@85d000 { status = "disabled"; };
+               etm@85e000 { status = "disabled"; };
+               etm@85f000 { status = "disabled"; };
+       };
+
+       i2c-muic {
+               compatible = "i2c-gpio";
+               sda-gpios = <&msmgpio 105 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+               scl-gpios = <&msmgpio 106 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+
+               #address-cells = <1>;
+               #size-cells = <0>;
+
+               muic: sm5502@25 {
+                       compatible = "siliconmitus,sm5502-muic";
+
+                       reg = <0x25>;
+                       interrupt-parent = <&msmgpio>;
+                       interrupts = <12 IRQ_TYPE_EDGE_FALLING>;
+
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&muic_int_default>;
+               };
+       };
+};
+
+&msmgpio {
+       muic_int_default: muic_int_default {
+               pinmux {
+                       function = "gpio";
+                       pins = "gpio12";
+               };
+               pinconf {
+                       pins = "gpio12";
+                       drive-strength = <2>;
+                       bias-disable;
+               };
+       };
+};
+
+&smd_rpm_regulators {
+       vdd_l1_l2_l3-supply = <&pm8916_s3>;
+       vdd_l4_l5_l6-supply = <&pm8916_s4>;
+       vdd_l7-supply = <&pm8916_s4>;
+
+       s1 {
+               regulator-min-microvolt = <500000>;
+               regulator-max-microvolt = <1300000>;
+       };
+
+       s3 {
+               regulator-min-microvolt = <1200000>;
+               regulator-max-microvolt = <1300000>;
+       };
+
+       s4 {
+               regulator-min-microvolt = <1800000>;
+               regulator-max-microvolt = <2100000>;
+       };
+
+       l1 {
+               regulator-min-microvolt = <1225000>;
+               regulator-max-microvolt = <1225000>;
+       };
+
+       l2 {
+               regulator-min-microvolt = <1200000>;
+               regulator-max-microvolt = <1200000>;
+       };
+
+       l3 {
+               regulator-min-microvolt = <500000>;
+               regulator-max-microvolt = <1287500>;
+       };
+
+       l4 {
+               regulator-min-microvolt = <2050000>;
+               regulator-max-microvolt = <2050000>;
+       };
+
+       l5 {
+               regulator-min-microvolt = <1800000>;
+               regulator-max-microvolt = <1800000>;
+       };
+
+       l6 {
+               regulator-min-microvolt = <1800000>;
+               regulator-max-microvolt = <1800000>;
+       };
+
+       l7 {
+               regulator-min-microvolt = <1800000>;
+               regulator-max-microvolt = <1800000>;
+       };
+
+       l8 {
+               regulator-min-microvolt = <2850000>;
+               regulator-max-microvolt = <2900000>;
+       };
+
+       l9 {
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+       };
+
+       l10 {
+               regulator-min-microvolt = <2700000>;
+               regulator-max-microvolt = <2800000>;
+       };
+
+       l11 {
+               regulator-min-microvolt = <1800000>;
+               regulator-max-microvolt = <2950000>;
+               regulator-allow-set-load;
+               regulator-system-load = <200000>;
+       };
+
+       l12 {
+               regulator-min-microvolt = <1800000>;
+               regulator-max-microvolt = <2950000>;
+       };
+
+       l13 {
+               regulator-min-microvolt = <3075000>;
+               regulator-max-microvolt = <3075000>;
+       };
+
+       l14 {
+               regulator-min-microvolt = <1800000>;
+               regulator-max-microvolt = <3300000>;
+       };
+
+       l15 {
+               regulator-min-microvolt = <1800000>;
+               regulator-max-microvolt = <3300000>;
+       };
+
+       l16 {
+               regulator-min-microvolt = <1800000>;
+               regulator-max-microvolt = <3300000>;
+       };
+
+       l17 {
+               regulator-min-microvolt = <2850000>;
+               regulator-max-microvolt = <2850000>;
+       };
+
+       l18 {
+               regulator-min-microvolt = <2700000>;
+               regulator-max-microvolt = <2700000>;
+       };
+};

diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-a3u-eur.dts b/arch/arm64/boot/dts/qcom/msm8916-samsung-a3u-eur.dts
new file mode 100644 (file)
index 0000000..d10f7ac
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-a3u-eur.dts
@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+/dts-v1/;
+
+#include "msm8916-samsung-a2015-common.dtsi"
+
+/ {
+       model = "Samsung Galaxy A3U (EUR)";
+       compatible = "samsung,a3u-eur", "qcom,msm8916";
+};

diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-a5u-eur.dts b/arch/arm64/boot/dts/qcom/msm8916-samsung-a5u-eur.dts
new file mode 100644 (file)
index 0000000..1aa59da
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-a5u-eur.dts
@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+/dts-v1/;
+
+#include "msm8916-samsung-a2015-common.dtsi"
+
+/ {
+       model = "Samsung Galaxy A5U (EUR)";
+       compatible = "samsung,a5u-eur", "qcom,msm8916";
+};