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    Subject[PATCH v16 40/40] ARM: tegra20/30: Disable unused host1x hardware
    Date
    MPE, VI, EPP and ISP were never used and we don't have drivers for them.
    Since these modules are enabled by default in a device-tree, a device is
    created for them, blocking voltage scaling because there is no driver to
    bind, and thus, state of PMC driver is never synced. Disable them.

    Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
    ---
    arch/arm/boot/dts/tegra20.dtsi | 4 ++++
    arch/arm/boot/dts/tegra30.dtsi | 8 ++++++++
    2 files changed, 12 insertions(+)

    diff --git a/arch/arm/boot/dts/tegra20.dtsi b/arch/arm/boot/dts/tegra20.dtsi
    index 7b69ffc57abe..8010b40d7377 100644
    --- a/arch/arm/boot/dts/tegra20.dtsi
    +++ b/arch/arm/boot/dts/tegra20.dtsi
    @@ -59,6 +59,7 @@ mpe@54040000 {
    reset-names = "mpe";
    power-domains = <&pd_mpe>;
    operating-points-v2 = <&mpe_dvfs_opp_table>;
    + status = "disabled";
    };

    vi@54080000 {
    @@ -70,6 +71,7 @@ vi@54080000 {
    reset-names = "vi";
    power-domains = <&pd_venc>;
    operating-points-v2 = <&vi_dvfs_opp_table>;
    + status = "disabled";
    };

    epp@540c0000 {
    @@ -81,6 +83,7 @@ epp@540c0000 {
    reset-names = "epp";
    power-domains = <&pd_core>;
    operating-points-v2 = <&epp_dvfs_opp_table>;
    + status = "disabled";
    };

    isp@54100000 {
    @@ -91,6 +94,7 @@ isp@54100000 {
    resets = <&tegra_car 23>;
    reset-names = "isp";
    power-domains = <&pd_venc>;
    + status = "disabled";
    };

    gr2d@54140000 {
    diff --git a/arch/arm/boot/dts/tegra30.dtsi b/arch/arm/boot/dts/tegra30.dtsi
    index 96d1c5688248..c8b22ec30ef0 100644
    --- a/arch/arm/boot/dts/tegra30.dtsi
    +++ b/arch/arm/boot/dts/tegra30.dtsi
    @@ -145,6 +145,8 @@ mpe@54040000 {
    operating-points-v2 = <&mpe_dvfs_opp_table>;

    iommus = <&mc TEGRA_SWGROUP_MPE>;
    +
    + status = "disabled";
    };

    vi@54080000 {
    @@ -158,6 +160,8 @@ vi@54080000 {
    operating-points-v2 = <&vi_dvfs_opp_table>;

    iommus = <&mc TEGRA_SWGROUP_VI>;
    +
    + status = "disabled";
    };

    epp@540c0000 {
    @@ -171,6 +175,8 @@ epp@540c0000 {
    operating-points-v2 = <&epp_dvfs_opp_table>;

    iommus = <&mc TEGRA_SWGROUP_EPP>;
    +
    + status = "disabled";
    };

    isp@54100000 {
    @@ -183,6 +189,8 @@ isp@54100000 {
    power-domains = <&pd_venc>;

    iommus = <&mc TEGRA_SWGROUP_ISP>;
    +
    + status = "disabled";
    };

    gr2d@54140000 {
    --
    2.33.1
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