Subject: [PATCH] ARM: dts: omap5-board-common: Describe the voltage supply mapping accurately

From: [email-masked] (Tony Lindgren)
Date: Thu, 5 May 2016 11:36:11 -0700

* Nishanth Menon <[email-masked]> [160504 12:52]:
> On 05/04/2016 02:20 PM, Nishanth Menon wrote:
> [...]
> 
> > @@ -551,6 +590,8 @@
> >  
> >  				ldo9_reg: ldo9 {
> >  					/* VCC_DV_SDIO: vdds_sdcard */
> > +					vin-supply = <&vmmcsdio_fixed>;
> > +
> 
> There is an extra white space here, and vmmcsd_fixed is the regulator
> to be used, looks like vmmcsdio_fixed should ideally been vwlan_fixed
> or something.. the actual rail to LDO9_IN was called vmmc_3v3_SDIO..
> 
> Sorry for the confusion. Unfortunately, I can not recreate the fail on
> my board, but this sounded like the closest fix I can think of.

Looks like arch/arm/boot/dts/tegra114-dalmore.dts has entries like
this instead for the PMIC:

ldo9-in-supply = <&palmas_smps9_reg>:
...

Doing simlar changes for omap5-board-common.dtsi seems to fix the
issues for me:

LDO3: supplied by vdds_1v8_main
LDO4: supplied by vdds_1v8_main
ldo4: Bringing 0uV into 1800000-1800000uV
LDO5: supplied by vsys_cobra
LDO6: supplied by vdds_1v8_main
LDO7: supplied by vsys_cobra
ldo7: Bringing 0uV into 2000000-2000000uV
LDO8: supplied by vsys_cobra
LDO9: supplied by vmmcsd_fixed

See also the patch below too, and please check I got things right
based on your earlier patch :)

Now I'm wondering if the x15 related vin-supply changes are actually all
ignored? It seems that "vin" is only automatically configured for the
fixed-regulator? Maybe regulator-palmas should be updated to use the
"vin-supply" if configured to avoid confusion?

Regards,

Tony

8< -----------------
--- a/arch/arm/boot/dts/omap5-board-common.dtsi
+++ b/arch/arm/boot/dts/omap5-board-common.dtsi
@@ -14,6 +14,29 @@
 		display0 = &hdmi0;
 	};
 
+	vmain: fixedregulator-vmain {
+		compatible = "regulator-fixed";
+		regulator-name = "vmain";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+	};
+
+	vsys_cobra: fixedregulator-vsys_cobra {
+		compatible = "regulator-fixed";
+		regulator-name = "vsys_cobra";
+		vin-supply = <&vmain>;
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+	};
+
+	vdds_1v8_main: fixedregulator-vdds_1v8_main {
+		compatible = "regulator-fixed";
+		regulator-name = "vdds_1v8_main";
+		vin-supply = <&smps7_reg>;
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+	};
+
 	vmmcsd_fixed: fixedregulator-mmcsd {
 		compatible = "regulator-fixed";
 		regulator-name = "vmmcsd_fixed";
@@ -409,6 +432,25 @@
 
 			ti,ldo6-vibrator;
 
+			smps123-in-supply = <&vsys_cobra>;
+			smps45-in-supply = <&vsys_cobra>;
+			smps6-in-supply = <&vsys_cobra>;
+			smps7-in-supply = <&vsys_cobra>;
+			smps8-in-supply = <&vsys_cobra>;
+			smps9-in-supply = <&vsys_cobra>;
+			smps10_out2-in-supply = <&vsys_cobra>;
+			smps10_out1-in-supply = <&vsys_cobra>;
+			ldo1-in-supply = <&vsys_cobra>;
+			ldo2-in-supply = <&vsys_cobra>;
+			ldo3-in-supply = <&vdds_1v8_main>;
+			ldo4-in-supply = <&vdds_1v8_main>;
+			ldo5-in-supply = <&vsys_cobra>;
+			ldo6-in-supply = <&vdds_1v8_main>;
+			ldo7-in-supply = <&vsys_cobra>;
+			ldo8-in-supply = <&vsys_cobra>;
+			ldo9-in-supply = <&vmmcsd_fixed>;
+			ldousb-in-supply = <&vsys_cobra>;
+
 			regulators {
 				smps123_reg: smps123 {
 					/* VDD_OPP_MPU */