Hi Nishanth,
Thank you for the provided feedback.
On 11/25/2015 11:36 PM, Nishanth Menon wrote:
On 11/25/2015 12:39 AM, Dmitry Lifshitz wrote:
[...]
diff --git a/arch/arm/boot/dts/am57xx-cl-som-am57x.dts
b/arch/arm/boot/dts/am57xx-cl-som-am57x.dts
new file mode 100644
index 0000000..b11d7da
--- /dev/null
+++ b/arch/arm/boot/dts/am57xx-cl-som-am57x.dts
[...]
+/ {
+ model = "CompuLab CL-SOM-AM57x";
+ compatible = "compulab,cl-som-am57x", "ti,am5728", "ti,dra742", "ti,dra74",
"ti,dra7";
+
+ memory {
+ device_type = "memory";
+ reg = <0x80000000 0x20000000>; /* 512 MB - minimal
configuration */
I think if you like to enable LPAE, the format might look a little
different..
We would like to have a basic HW support in the mainline. It might be
enhanced later, once we get to work on LPAE stuff.
+ };
+
+ leds {
+ compatible = "gpio-leds";
+ pinctrl-names = "default";
+ pinctrl-0 = <&leds_pins_default>;
+
+ led@0 {
+ label = "cl-som-am57x:green";
+ gpios = <&gpio2 5 GPIO_ACTIVE_HIGH>;
+ linux,default-trigger = "heartbeat";
+ default-state = "off";
+ };
+ };
+};
+
+&dra7_pmx_core {
+ leds_pins_default: leds_pins_default {
+ pinctrl-single,pins = <
+ DRA7XX_CORE_IOPAD(0x347c, PIN_OUTPUT | MUX_MODE14)
/* gpmc_a15.gpio2_5 */
+ >;
+ };
+
+ i2c1_pins_default: i2c1_pins_default {
+ pinctrl-single,pins = <
+ DRA7XX_CORE_IOPAD(0x3800, PIN_INPUT_PULLUP | MUX_MODE0)
/* i2c1_sda.sda */
+ DRA7XX_CORE_IOPAD(0x3804, PIN_INPUT_PULLUP | MUX_MODE0)
/* i2c1_scl.scl */
+ >;
+ };
+
+ tps659038_pins_default: tps659038_pins_default {
+ pinctrl-single,pins = <
+ DRA7XX_CORE_IOPAD(0x3818, PIN_INPUT_PULLUP |
MUX_MODE14) /* wakeup0.gpio1_0 */
+ >;
+ };
Generic comment: As per requirements of the SoC -> all pinctrl must be
done in bootloader. this was a recommendation that came in too late
for TI platforms that got introduced in upstream, but that cleanup
should eventually take place as well.
Please, could you provide a reference to those recommendations.
Do you mean pinctrl for PMIC pins only?
+};
+
+&i2c1 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c1_pins_default>;
+ clock-frequency = <400000>;
+
+ tps659038: tps659038@58 {
+ compatible = "ti,tps659038";
+ reg = <0x58>;
+ interrupt-parent = <&gpio1>;
+ interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
Also See: https://patchwork.kernel.org/patch/7596541/ ->
Documentation/devicetree/bindings/i2c/i2c.txt -> since you seem to
have a PMIC with power button, you might be able to get wakeup source
also there.
Do you mean just adding "wakeup-source" property?
According to Documentation/devicetree/bindings/i2c/i2c.txt the primary
interrupt will be used as wakeup interrupt.
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&tps659038_pins_default>;
+
+ #interrupt-cells = <2>;
+ interrupt-controller;
+
+ ti,system-power-controller;
Assuming powerhold signal and BOOT0,1 is proper here, else poweroff
will never work.
Please, could you provide more details regarding this issue.
+
+ tps659038_pmic {
+ compatible = "ti,tps659038-pmic";
+
+ regulators {
+ smps12_reg: smps12 {
+ /* VDD_MPU */
+ regulator-name = "smps12";
+ regulator-min-microvolt = < 850000>;
+ regulator-max-microvolt = <1250000>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ smps3_reg: smps3 {
+ /* VDD_DDR */
+ regulator-name = "smps3";
+ regulator-min-microvolt = <1500000>;
+ regulator-max-microvolt = <1500000>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ smps45_reg: smps45 {
+ /* VDD_DSPEVE */
+ regulator-name = "smps45";
+ regulator-min-microvolt = < 850000>;
+ regulator-max-microvolt = <1160000>;
1.25v if you want to support OPP_HIGH. as per latest data sheet.
Ok, got it. Voltages will be updated in V2. Thanks.
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ smps6_reg: smps6 {
+ /* VDD_GPU */
+ regulator-name = "smps6";
+ regulator-min-microvolt = < 850000>;
+ regulator-max-microvolt = <1160000>;
1.25v if you want to support OPP_HIGH. as per latest data sheet.
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ smps7_reg: smps7 {
+ /* VDD_CORE */
+ regulator-name = "smps7";
+ regulator-min-microvolt = < 850000>;
+ regulator-max-microvolt = <1160000>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ smps8_reg: smps8 {
+ /* VDD_IVA */
+ regulator-name = "smps8";
+ regulator-min-microvolt = < 850000>;
+ regulator-max-microvolt = <1160000>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ smps9_reg: smps9 {
+ /* PMIC_3V3 */
+ regulator-name = "smps9";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+
+ ldo1_reg: ldo1 {
+ /* VDD_SD / VDDSHV8 */
+ regulator-name = "ldo1";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <3300000>;
for eventual UHS mode support, it is recommended to keep VDD_SD
separate from VDDSHV8. many of TI evms also suffer from this issue :(
That's the way it is.
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ ldo2_reg: ldo2 {
+ /* VDD_1V8 */
+ regulator-name = "ldo2";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ ldo3_reg: ldo3 {
+ /* VDDA_1V8_PHYA */
+ regulator-name = "ldo3";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ ldo4_reg: ldo4 {
+ /* VDDA_1V8_PHYB */
+ regulator-name = "ldo4";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
Happy to see this is already split up. you might want to document
which PHYs are supplied by PHYA/B in comments for future reference
instead of having to dig through schematics to figure that out..
I will provide the comments in V2. Thanks.
+
+ ldo9_reg: ldo9 {
+ /* VDD_RTC */
+ regulator-name = "ldo9";
+ regulator-min-microvolt = <1050000>;
+ regulator-max-microvolt = <1050000>;
+ regulator-always-on;
+ regulator-boot-on;
as per data sheet:
"VD_RTC can optionally be tied to VD_CORE and operate at the VD_CORE
AVS voltages."
I assume that is not the case here.
Yes indeed.
+ };
+
+ ldoln_reg: ldoln {
+ /* VDDA_1V8_PLL */
+ regulator-name = "ldoln";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ ldousb_reg: ldousb {
+ /* VDDA_3V_USB: VDDA_USBHS33 */
+ regulator-name = "ldousb";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
All SoC VDDAs must be always-on.
Will be fixed in V2. Thanks.
[...]
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