OMAP5uEVM[1] based platforms share a similar voltage rail map. This should be properly described in device tree, without this regulator core will be unable to determine the source voltage of LDOs such as LDO9 and SMPS10 which could be configured for bypass depending on the voltage requested of them. This results in conditions such as [ 4.207853] ldo9: bypassed regulator has no supply! [ 4.212982] ldo9: failed to get the current voltage(-517) [ 4.218662] palmas-pmic 48070000.i2c:palmas@48:palmas_pmic: failed to register 48070000.i2c:palmas@48:palmas_pmic regulator NOTE: I do not have access to omap5-igep0050 schematics, but based on test behavior for LDO9 by Tony, I am assuming to be the same map as OMAP5uEVM. Reference schematics document: 750-2628-103-SCH rev D (Access to schematics requires NDA as per https://e2e.ti.com/support/omap/f/885/t/282560) [1] https://svtronics.com/5432 Reported-by: Tony Lindgren <tony@xxxxxxxxxxx> Signed-off-by: Nishanth Menon <nm@xxxxxx> --- Based on next-20160504 This should fix regression reported for mmcsd such as that seen in: https://storage.kernelci.org/next/next-20160504/arm-omap2plus_defconfig/lab-baylibre-seattle/boot-omap5-uevm_rootfs:mmc.txt http://pastebin.ubuntu.com/16223856/ NFS data transfer test however failed on linux-next next-20160504 - this could be a second order issue to be identified. arch/arm/boot/dts/omap5-board-common.dtsi | 42 +++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) diff --git a/arch/arm/boot/dts/omap5-board-common.dtsi b/arch/arm/boot/dts/omap5-board-common.dtsi index dc759a3028b7..56eb4f1a6bf0 100644 --- 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"; @@ -413,6 +436,7 @@ smps123_reg: smps123 { /* VDD_OPP_MPU */ regulator-name = "smps123"; + vin-supply = <&vsys_cobra>; regulator-min-microvolt = < 600000>; regulator-max-microvolt = <1500000>; regulator-always-on; @@ -422,6 +446,7 @@ smps45_reg: smps45 { /* VDD_OPP_MM */ regulator-name = "smps45"; + vin-supply = <&vsys_cobra>; regulator-min-microvolt = < 600000>; regulator-max-microvolt = <1310000>; regulator-always-on; @@ -431,6 +456,7 @@ smps6_reg: smps6 { /* VDD_DDR3 - over VDD_SMPS6 */ regulator-name = "smps6"; + vin-supply = <&vsys_cobra>; regulator-min-microvolt = <1200000>; regulator-max-microvolt = <1200000>; regulator-always-on; @@ -440,6 +466,7 @@ smps7_reg: smps7 { /* VDDS_1v8_OMAP over VDDS_1v8_MAIN */ regulator-name = "smps7"; + vin-supply = <&vsys_cobra>; regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; regulator-always-on; @@ -449,6 +476,7 @@ smps8_reg: smps8 { /* VDD_OPP_CORE */ regulator-name = "smps8"; + vin-supply = <&vsys_cobra>; regulator-min-microvolt = < 600000>; regulator-max-microvolt = <1310000>; regulator-always-on; @@ -458,6 +486,7 @@ smps9_reg: smps9 { /* VDDA_2v1_AUD over VDD_2v1 */ regulator-name = "smps9"; + vin-supply = <&vsys_cobra>; regulator-min-microvolt = <2100000>; regulator-max-microvolt = <2100000>; ti,smps-range = <0x80>; @@ -466,6 +495,7 @@ smps10_out2_reg: smps10_out2 { /* VBUS_5V_OTG */ regulator-name = "smps10_out2"; + vin-supply = <&vsys_cobra>; regulator-min-microvolt = <5000000>; regulator-max-microvolt = <5000000>; regulator-always-on; @@ -475,6 +505,7 @@ smps10_out1_reg: smps10_out1 { /* VBUS_5V_OTG */ regulator-name = "smps10_out1"; + vin-supply = <&vsys_cobra>; regulator-min-microvolt = <5000000>; regulator-max-microvolt = <5000000>; }; @@ -482,6 +513,7 @@ ldo1_reg: ldo1 { /* VDDAPHY_CAM: vdda_csiport */ regulator-name = "ldo1"; + vin-supply = <&vsys_cobra>; regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; }; @@ -489,6 +521,7 @@ ldo2_reg: ldo2 { /* VCC_2V8_DISP: Does not go anywhere */ regulator-name = "ldo2"; + vin-supply = <&vsys_cobra>; regulator-min-microvolt = <2800000>; regulator-max-microvolt = <2800000>; /* Unused */ @@ -498,6 +531,7 @@ ldo3_reg: ldo3 { /* VDDAPHY_MDM: vdda_lli */ regulator-name = "ldo3"; + vin-supply = <&vdds_1v8_main>; regulator-min-microvolt = <1500000>; regulator-max-microvolt = <1500000>; regulator-boot-on; @@ -508,6 +542,7 @@ ldo4_reg: ldo4 { /* VDDAPHY_DISP: vdda_dsiport/hdmi */ regulator-name = "ldo4"; + vin-supply = <&vdds_1v8_main>; regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; }; @@ -515,6 +550,7 @@ ldo5_reg: ldo5 { /* VDDA_1V8_PHY: usb/sata/hdmi.. */ regulator-name = "ldo5"; + vin-supply = <&vsys_cobra>; regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; regulator-always-on; @@ -524,6 +560,7 @@ ldo6_reg: ldo6 { /* VDDS_1V2_WKUP: hsic/ldo_emu_wkup */ regulator-name = "ldo6"; + vin-supply = <&vdds_1v8_main>; regulator-min-microvolt = <1200000>; regulator-max-microvolt = <1200000>; regulator-always-on; @@ -533,6 +570,7 @@ ldo7_reg: ldo7 { /* VDD_VPP: vpp1 */ regulator-name = "ldo7"; + vin-supply = <&vsys_cobra>; regulator-min-microvolt = <2000000>; regulator-max-microvolt = <2000000>; /* Only for efuse reprograming! */ @@ -542,6 +580,7 @@ ldo8_reg: ldo8 { /* VDD_3v0: Does not go anywhere */ regulator-name = "ldo8"; + vin-supply = <&vsys_cobra>; regulator-min-microvolt = <3000000>; regulator-max-microvolt = <3000000>; regulator-boot-on; @@ -551,6 +590,8 @@ ldo9_reg: ldo9 { /* VCC_DV_SDIO: vdds_sdcard */ + vin-supply = <&vmmcsdio_fixed>; + regulator-name = "ldo9"; regulator-min-microvolt = <1800000>; regulator-max-microvolt = <3000000>; @@ -569,6 +610,7 @@ ldousb_reg: ldousb { /* VDDA_3V_USB: VDDA_USBHS33 */ regulator-name = "ldousb"; + vin-supply = <&vsys_cobra>; regulator-min-microvolt = <3250000>; regulator-max-microvolt = <3250000>; regulator-always-on; -- 2.8.0 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
