[ Cc linux-mmc, Ulf, Andy and Bjorn ]
Hi,
I wonder what is the reason for getting -EPROBE_DEFER.
I suppose mmc sdhci-msm.c driver supports also msm8994 angler and sdhc dts
section is just improperly configured. Any hint what could be wrong?
BTW Documentation/devicetree/bindings/mmc/sdhci-msm.txt in mainline is quite
different from downstream, e.g. there should be just pinctrl-0 (code copied from
downstream in msm8994.dtsi has also "sleep"). Is it mainline doc outdated?
Because at least msm8994-msft-lumia-octagon.dtsi is using sdhc with also
pinctrl-1.
Thanks for any hint.
Kind regards,
Petr
> Signed-off-by: Petr Vorel <petr.vorel@xxxxxxxxx>
> ---
> Hi,
> this is should *not* be applied as it does not working (yet).
> I'm trying to enable sdhc for msm8994 angler, but setup is obviously
> wrong as device is not enabled.
> I get just: sdhci_msm f98a4900.sdhci: Got CD GPIO
> Debugging with printing in the code I see problem in drivers/mmc/host/sdhci-msm.c:
> static int sdhci_msm_probe(struct platform_device *pdev)
> {
> ...
> if (!msm_host->mci_removed) {
> msm_host->core_mem = devm_platform_ioremap_resource(pdev, 1);
> if (IS_ERR(msm_host->core_mem)) {
> ret = PTR_ERR(msm_host->core_mem);
> /* vorel: ret == -517 (-EPROBE_DEFER) several times till giving up */
> goto clk_disable;
> }
> }
> Triggered in drivers/mmc/core/regulator.c
> /**
> * mmc_regulator_get_supply - try to get VMMC and VQMMC regulators for a host
> * @mmc: the host to regulate
> *
> * Returns 0 or errno. errno should be handled, it is either a critical error
> * or -EPROBE_DEFER. 0 means no critical error but it does not mean all
> * regulators have been found because they all are optional. If you require
> * certain regulators, you need to check separately in your driver if they got
> * populated after calling this function.
> */
> int mmc_regulator_get_supply(struct mmc_host *mmc)
> {
> struct device *dev = mmc_dev(mmc);
> int ret;
> mmc->supply.vmmc = devm_regulator_get_optional(dev, "vmmc");
> mmc->supply.vqmmc = devm_regulator_get_optional(dev, "vqmmc");
> if (IS_ERR(mmc->supply.vmmc)) {
> if (PTR_ERR(mmc->supply.vmmc) == -EPROBE_DEFER) {
> return -EPROBE_DEFER; /* vorel: error here */
> }
> dev_dbg(dev, "No vmmc regulator found\n");
> ...
> Obviously it's something wrong with
> sdhc1
> + vmmc-supply = <&pm8994_l20>;
> + vqmmc-supply = <&pm8994_s4>;
> and/or sdhc2
> + vmmc-supply = <&pm8994_l21>;
> + vqmmc-supply = <&pm8994_l13>;
> Any idea what to check?
> Downstream kernel has msm8994.dtsi [1] (ignoring sdhc_3 which is
> disabled):
> sdhc_1: sdhci@f9824900 {
> compatible = "qcom,sdhci-msm";
> reg = <0xf9824900 0x1a0>, <0xf9824000 0x800>;
> reg-names = "hc_mem", "core_mem";
> interrupts = <0 123 0>, <0 138 0>;
> interrupt-names = "hc_irq", "pwr_irq";
> qcom,bus-width = <8>;
> qcom,cpu-dma-latency-us = <301 70>;
> qcom,cpu-affinity = "affine_cores";
> qcom,cpu-affinity-mask = <0x0f 0xf0>;
> qcom,wakeup-on-idle;
> qcom,msm-bus,name = "sdhc1";
> qcom,msm-bus,num-cases = <9>;
> qcom,msm-bus,num-paths = <1>;
> qcom,msm-bus,vectors-KBps = <78 512 0 0>, /* No vote */
> <78 512 1600 3200>, /* 400 KB/s*/
> <78 512 80000 160000>, /* 20 MB/s */
> <78 512 100000 200000>, /* 25 MB/s */
> <78 512 200000 400000>, /* 50 MB/s */
> <78 512 400000 800000>, /* 100 MB/s */
> <78 512 400000 800000>, /* 200 MB/s */
> <78 512 400000 800000>, /* 400 MB/s */
> <78 512 2048000 4096000>; /* Max. bandwidth */
> qcom,bus-bw-vectors-bps = <0 400000 20000000 25000000 50000000
> 100000000 200000000 400000000 4294967295>;
> clock-names = "iface_clk", "core_clk";
> clocks = <&clock_gcc clk_gcc_sdcc1_ahb_clk>,
> <&clock_gcc clk_gcc_sdcc1_apps_clk>;
> status = "disabled";
> };
> sdhc_2: sdhci@f98a4900 {
> compatible = "qcom,sdhci-msm";
> reg = <0xf98a4900 0x11c>, <0xf98a4000 0x800>;
> reg-names = "hc_mem", "core_mem";
> interrupts = <0 125 0>, <0 221 0>;
> interrupt-names = "hc_irq", "pwr_irq";
> clock-names = "iface_clk", "core_clk";
> clocks = <&clock_gcc clk_gcc_sdcc2_ahb_clk>,
> <&clock_gcc clk_gcc_sdcc2_apps_clk>;
> qcom,bus-width = <4>;
> qcom,cpu-dma-latency-us = <301 70>;
> qcom,cpu-affinity = "affine_cores";
> qcom,cpu-affinity-mask = <0x0f 0xf0>;
> qcom,wakeup-on-idle;
> qcom,msm-bus,name = "sdhc2";
> qcom,msm-bus,num-cases = <8>;
> qcom,msm-bus,num-paths = <1>;
> qcom,msm-bus,vectors-KBps = <81 512 0 0>, /* No vote */
> <81 512 1600 3200>, /* 400 KB/s*/
> <81 512 80000 160000>, /* 20 MB/s */
> <81 512 100000 200000>, /* 25 MB/s */
> <81 512 200000 400000>, /* 50 MB/s */
> <81 512 400000 800000>, /* 100 MB/s */
> <81 512 800000 800000>, /* 200 MB/s */
> <81 512 2048000 4096000>; /* Max. bandwidth */
> qcom,bus-bw-vectors-bps = <0 400000 20000000 25000000 50000000
> 100000000 200000000 4294967295>;
> status = "disabled";
> };
> With specific values for angler in msm8994-mtp.dtsi [2]:
> &sdhc_1 {
> vdd-supply = <&pm8994_l20>;
> qcom,vdd-always-on;
> qcom,vdd-voltage-level = <2950000 2950000>;
> qcom,vdd-current-level = <200 570000>;
> vdd-io-supply = <&pm8994_s4>;
> qcom,vdd-io-always-on;
> qcom,vdd-io-voltage-level = <1800000 1800000>;
> qcom,vdd-io-current-level = <200 325000>;
> pinctrl-names = "active", "sleep";
> pinctrl-0 = <&sdc1_clk_on &sdc1_cmd_on &sdc1_data_on &sdc1_rclk_on>;
> pinctrl-1 = <&sdc1_clk_off &sdc1_cmd_off &sdc1_data_off &sdc1_rclk_off>;
> qcom,nonremovable;
> qcom,clk-rates = <400000 20000000 25000000 50000000 100000000 192000000 384000000>;
> qcom,bus-speed-mode = "HS400_1p8v", "HS200_1p8v", "DDR_1p8v";
> status = "ok";
> };
> &sdhc_2 {
> vdd-supply = <&pm8994_l21>;
> qcom,vdd-voltage-level = <2950000 2950000>;
> qcom,vdd-current-level = <200 800000>;
> vdd-io-supply = <&pm8994_l13>;
> qcom,vdd-io-voltage-level = <1800000 2950000>;
> qcom,vdd-io-current-level = <200 22000>;
> #address-cells = <0>;
> interrupt-parent = <&sdhc_2>;
> interrupts = <0 1 2>;
> #interrupt-cells = <1>;
> interrupt-map-mask = <0xffffffff>;
> interrupt-map = <0 &intc 0 125 0
> 1 &intc 0 221 0
> 2 &pm8994_gpios 8 0x3>;
> interrupt-names = "hc_irq", "pwr_irq", "status_irq";
> cd-gpios = <&pm8994_gpios 8 0x1>;
> pinctrl-names = "active", "sleep";
> pinctrl-0 = <&sdc2_clk_on &sdc2_cmd_on &sdc2_data_on>;
> pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off>;
> qcom,clk-rates = <400000 20000000 25000000 50000000 100000000 200000000>;
> qcom,bus-speed-mode = "SDR12", "SDR25", "SDR50", "DDR50", "SDR104";
> status = "ok";
> };
> Current mainline msm8994.dtsi defines sdhc* as:
> sdhc1: sdhci@f9824900 {
> compatible = "qcom,sdhci-msm-v4";
> reg = <0xf9824900 0x1a0>, <0xf9824000 0x800>;
> reg-names = "hc_mem", "core_mem";
> interrupts = <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>,
> <GIC_SPI 138 IRQ_TYPE_LEVEL_HIGH>;
> interrupt-names = "hc_irq", "pwr_irq";
> clocks = <&gcc GCC_SDCC1_APPS_CLK>,
> <&gcc GCC_SDCC1_AHB_CLK>,
> <&xo_board>;
> clock-names = "core", "iface", "xo";
> pinctrl-names = "default", "sleep";
> pinctrl-0 = <&sdc1_clk_on &sdc1_cmd_on &sdc1_data_on &sdc1_rclk_on>;
> pinctrl-1 = <&sdc1_clk_off &sdc1_cmd_off &sdc1_data_off &sdc1_rclk_off>;
> bus-width = <8>;
> non-removable;
> status = "disabled";
> };
> sdhc2: sdhci@f98a4900 {
> compatible = "qcom,sdhci-msm-v4";
> reg = <0xf98a4900 0x11c>, <0xf98a4000 0x800>;
> reg-names = "hc_mem", "core_mem";
> interrupts = <GIC_SPI 125 IRQ_TYPE_LEVEL_HIGH>,
> <GIC_SPI 221 IRQ_TYPE_LEVEL_HIGH>;
> interrupt-names = "hc_irq", "pwr_irq";
> clocks = <&gcc GCC_SDCC2_APPS_CLK>,
> <&gcc GCC_SDCC2_AHB_CLK>,
> <&xo_board>;
> clock-names = "core", "iface", "xo";
> pinctrl-names = "default", "sleep";
> pinctrl-0 = <&sdc2_clk_on &sdc2_cmd_on &sdc2_data_on>;
> pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off>;
> cd-gpios = <&tlmm 100 0>;
> bus-width = <4>;
> status = "disabled";
> };
> => reg values are the same as in downstream, cd-gpios is defined only
> for sdhc_2 (redefined for angler in downstream).
> I supppose qcom,vdd-io-voltage-level from downstream is mapped to
> regulator-min-microvolt and regulator-max-microvolt from correspondent regulator pm8994_*.
> How to map qcom,vdd-current-level (load levels for supply in low/high power mode)? I don't see it in
> bindings/regulator/regulator.yaml in mainline.
> Also, how to interpred (check) regulator-{min,max}-microvolt values?
> xxd /proc/device-tree/soc/qcom,rpm-smd/rpm-regulator-smpa3/regulator-s3/regulator-min-microvolt
> 00000000: 0013 d620 ...
> xxd /proc/device-tree/soc/sdhci@f9824900/vdd-io-supply
> 00000000: 0000 003d ...=
> &sdhc_1 {
> ...
> vdd-io-supply = <&pm8994_s4>;
> }
> pm8994_s3: regulator-s3 {
> regulator-min-microvolt = <1300000>;
> ...
> }
> Thanks for any tip.
> Kind regards,
> Petr
> [1] https://android.googlesource.com/kernel/msm/+/android-msm-bullhead-3.10-marshmallow-dr/arch/arm/boot/dts/qcom/msm8994.dtsi#1096
> [2] https://android.googlesource.com/kernel/msm/+/android-msm-bullhead-3.10-marshmallow-dr/arch/arm/boot/dts/qcom/msm8994-mtp.dtsi#28
> .../boot/dts/qcom/msm8994-angler-rev-101.dts | 283 ++++++++++++++++++
> 1 file changed, 283 insertions(+)
> diff --git a/arch/arm64/boot/dts/qcom/msm8994-angler-rev-101.dts b/arch/arm64/boot/dts/qcom/msm8994-angler-rev-101.dts
> index 0e3dd48f0dbf..c7de0dafe913 100644
> --- a/arch/arm64/boot/dts/qcom/msm8994-angler-rev-101.dts
> +++ b/arch/arm64/boot/dts/qcom/msm8994-angler-rev-101.dts
> @@ -7,6 +7,9 @@
> /dts-v1/;
> #include "msm8994.dtsi"
> +#include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/input/gpio-keys.h>
> +#include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
> /* Angler's firmware does not report where the memory is allocated */
> /delete-node/ &cont_splash_mem;
> @@ -41,3 +44,283 @@ serial@f991e000 {
> &tlmm {
> gpio-reserved-ranges = <85 4>;
> };
> +
> +/*
> + * TODO remove duplicity with msm8992-bullhead-rev-101.dts
> + * There are some todo inherited from it.
> +
> + * FIXME: verify differences from msm8992-bullhead-rev-101.dts :
> +
> + pm8994_l20: regulator-l20 {
> + unique values:
> + qcom,init-current = <750>;
> + regulator-boot-on;
> +
> + pm8994_l28: regulator-l28 {
> + unique values:
> + qcom,init-current = <45>;
> + regulator-boot-on;
> + */
> +&rpm_requests {
> + pm8994_regulators: pm8994-regulators {
> + compatible = "qcom,rpm-pm8994-regulators";
> +
> + vdd_l1-supply = <&pm8994_s1>;
> + vdd_l2_26_28-supply = <&pm8994_s3>;
> + vdd_l3_11-supply = <&pm8994_s3>;
> + vdd_l4_27_31-supply = <&pm8994_s3>;
> + vdd_l5_7-supply = <&pm8994_s3>;
> + vdd_l6_12_32-supply = <&pm8994_s5>;
> + vdd_l8_16_30-supply = <&vph_pwr>;
> + vdd_l9_10_18_22-supply = <&vph_pwr>;
> + vdd_l13_19_23_24-supply = <&vph_pwr>;
> + vdd_l14_15-supply = <&pm8994_s5>;
> + vdd_l17_29-supply = <&vph_pwr>;
> + vdd_l20_21-supply = <&vph_pwr>;
> + vdd_l25-supply = <&pm8994_s5>;
> + vdd_lvs1_2 = <&pm8994_s4>;
> +
> + /* S1, S2, S6 and S12 are managed by RPMPD */
> +
> + pm8994_s1: s1 {
> + regulator-min-microvolt = <800000>;
> + regulator-max-microvolt = <800000>;
> + };
> +
> + pm8994_s2: s2 {
> + /* TODO */
> + };
> +
> + pm8994_s3: s3 {
> + regulator-min-microvolt = <1300000>;
> + regulator-max-microvolt = <1300000>;
> + };
> +
> + pm8994_s4: s4 {
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <1800000>;
> + regulator-allow-set-load;
> + regulator-system-load = <325000>;
> + };
> +
> + pm8994_s5: s5 {
> + regulator-min-microvolt = <2150000>;
> + regulator-max-microvolt = <2150000>;
> + };
> +
> + pm8994_s7: s7 {
> + regulator-min-microvolt = <1000000>;
> + regulator-max-microvolt = <1000000>;
> + };
> +
> + /* S8, S9, S10 and S11 - SPMI-managed VDD_APC */
> +
> + pm8994_l1: l1 {
> + regulator-min-microvolt = <1000000>;
> + regulator-max-microvolt = <1000000>;
> + };
> +
> + pm8994_l2: l2 {
> + regulator-min-microvolt = <1250000>;
> + regulator-max-microvolt = <1250000>;
> + };
> +
> + pm8994_l3: l3 {
> + regulator-min-microvolt = <1200000>;
> + regulator-max-microvolt = <1200000>;
> + };
> +
> + pm8994_l4: l4 {
> + regulator-min-microvolt = <1225000>;
> + regulator-max-microvolt = <1225000>;
> + };
> +
> + /* L5 is inaccessible from RPM */
> +
> + pm8994_l6: l6 {
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <1800000>;
> + };
> +
> + /* L7 is inaccessible from RPM */
> +
> + pm8994_l8: l8 {
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <1800000>;
> + };
> +
> + pm8994_l9: l9 {
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <1800000>;
> + };
> +
> + pm8994_l10: l10 {
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <1800000>;
> + };
> +
> + pm8994_l11: l11 {
> + regulator-min-microvolt = <1200000>;
> + regulator-max-microvolt = <1200000>;
> + };
> +
> + pm8994_l12: l12 {
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <1800000>;
> + };
> +
> + pm8994_l13: l13 {
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <2950000>;
> + };
> +
> + pm8994_l14: l14 {
> + regulator-min-microvolt = <1200000>;
> + regulator-max-microvolt = <1200000>;
> + };
> +
> + pm8994_l15: l15 {
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <1800000>;
> + };
> +
> + pm8994_l16: l16 {
> + regulator-min-microvolt = <2700000>;
> + regulator-max-microvolt = <2700000>;
> + };
> +
> + pm8994_l17: l17 {
> + regulator-min-microvolt = <2700000>;
> + regulator-max-microvolt = <2700000>;
> + };
> +
> + pm8994_l18: l18 {
> + regulator-min-microvolt = <3000000>;
> + regulator-max-microvolt = <3000000>;
> + };
> +
> + pm8994_l19: l19 {
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <1800000>;
> + };
> +
> + pm8994_l20: l20 {
> + regulator-min-microvolt = <2950000>;
> + regulator-max-microvolt = <2950000>;
> + regulator-always-on;
> + regulator-boot-on;
> + regulator-allow-set-load;
> + regulator-system-load = <570000>;
> + };
> +
> + pm8994_l21: l21 {
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <1800000>;
> + regulator-always-on;
> + };
> +
> + pm8994_l22: l22 {
> + regulator-min-microvolt = <3100000>;
> + regulator-max-microvolt = <3100000>;
> + };
> +
> + pm8994_l23: l23 {
> + regulator-min-microvolt = <2800000>;
> + regulator-max-microvolt = <2800000>;
> + };
> +
> + pm8994_l24: l24 {
> + regulator-min-microvolt = <3075000>;
> + regulator-max-microvolt = <3150000>;
> + };
> +
> + pm8994_l25: l25 {
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <1800000>;
> + };
> +
> + pm8994_l26: l26 {
> + /* TODO from msm8992-bullhead-rev-101.dts: value from downstream
> + regulator-min-microvolt = <987500>;
> + fails to apply */
> + };
> +
> + pm8994_l27: l27 {
> + regulator-min-microvolt = <1050000>;
> + regulator-max-microvolt = <1050000>;
> + };
> +
> + pm8994_l28: l28 {
> + regulator-min-microvolt = <1000000>;
> + regulator-max-microvolt = <1000000>;
> + };
> +
> + pm8994_l29: l29 {
> + /* TODO from msm8992-bullhead-rev-101.dts: Unsupported voltage range.
> + regulator-min-microvolt = <2800000>;
> + regulator-max-microvolt = <2800000>;
> + qcom,init-voltage = <2800000>;
> + */
> + };
> +
> + pm8994_l30: l30 {
> + /* TODO from msm8992-bullhead-rev-101.dts: get this verified
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <1800000>;
> + qcom,init-voltage = <1800000>;
> + */
> + };
> +
> + pm8994_l31: l31 {
> + regulator-min-microvolt = <1200000>;
> + regulator-max-microvolt = <1200000>;
> + qcom,init-voltage = <1200000>;
> + /* FIXME: verify
> + qcom,init-current = <50>;
> + regulator-boot-on;
> + */
> + };
> +
> + pm8994_l32: l32 {
> + /* TODO from msm8992-bullhead-rev-101.dts: get this verified
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <1800000>;
> + qcom,init-voltage = <1800000>;
> + */
> + };
> + };
> +
> + pmi8994_regulators: pmi8994-regulators {
> + compatible = "qcom,rpm-pmi8994-regulators";
> +
> + vdd_s1-supply = <&vph_pwr>;
> + vdd_bst_byp-supply = <&vph_pwr>;
> +
> + pmi8994_s1: s1 {};
> +
> + /* S2 & S3 - VDD_GFX */
> +
> + pmi8994_bby: boost-bypass {};
> + };
> +};
> +
> +&sdhc1 {
> + status = "okay";
> +
> +
> + /* downstream: qcom,bus-speed-mode = "HS400_1p8v", "HS200_1p8v", "DDR_1p8v"; */
> + mmc-hs400-1_8v;
> +
> + vmmc-supply = <&pm8994_l20>;
> + vqmmc-supply = <&pm8994_s4>;
> +};
> +
> +&sdhc2 {
> + status = "okay";
> +
> + /* downstream: cd-gpios = <&pm8994_gpios 8 0x1>; */
> + cd-gpios = <&tlmm 8 GPIO_ACTIVE_LOW>;
> +
> + vmmc-supply = <&pm8994_l21>;
> + vqmmc-supply = <&pm8994_l13>;
> +};
