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    Subject[PATCH v4 2/2] arm64: dts: sc7180: Add required-opps for i2c
    Date
    qup-i2c devices on sc7180 are clocked with a fixed clock (19.2 MHz)
    Though qup-i2c does not support DVFS, it still needs to vote for a
    performance state on 'CX' to satisfy the 19.2 Mhz clock frequency
    requirement.

    Use 'required-opps' to pass this information from
    device tree, and also add the power-domains property to specify
    the CX power-domain.

    Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
    ---
    arch/arm64/boot/dts/qcom/sc7180.dtsi | 24 ++++++++++++++++++++++++
    1 file changed, 24 insertions(+)

    diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi
    index a5d58eb..cd30185 100644
    --- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
    +++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
    @@ -785,8 +785,10 @@
    <&gem_noc MASTER_APPSS_PROC 0 &config_noc SLAVE_QUP_0 0>,
    <&aggre1_noc MASTER_QUP_0 0 &mc_virt SLAVE_EBI1 0>;
    interconnect-names = "qup-core", "qup-config",
    "qup-memory";
    + power-domains = <&rpmhpd SC7180_CX>;
    + required-opps = <&rpmhpd_opp_low_svs>;
    status = "disabled";
    };

    spi0: spi@880000 {
    @@ -837,8 +839,10 @@
    <&gem_noc MASTER_APPSS_PROC 0 &config_noc SLAVE_QUP_0 0>,
    <&aggre1_noc MASTER_QUP_0 0 &mc_virt SLAVE_EBI1 0>;
    interconnect-names = "qup-core", "qup-config",
    "qup-memory";
    + power-domains = <&rpmhpd SC7180_CX>;
    + required-opps = <&rpmhpd_opp_low_svs>;
    status = "disabled";
    };

    spi1: spi@884000 {
    @@ -889,8 +893,10 @@
    <&gem_noc MASTER_APPSS_PROC 0 &config_noc SLAVE_QUP_0 0>,
    <&aggre1_noc MASTER_QUP_0 0 &mc_virt SLAVE_EBI1 0>;
    interconnect-names = "qup-core", "qup-config",
    "qup-memory";
    + power-domains = <&rpmhpd SC7180_CX>;
    + required-opps = <&rpmhpd_opp_low_svs>;
    status = "disabled";
    };

    uart2: serial@888000 {
    @@ -923,8 +929,10 @@
    <&gem_noc MASTER_APPSS_PROC 0 &config_noc SLAVE_QUP_0 0>,
    <&aggre1_noc MASTER_QUP_0 0 &mc_virt SLAVE_EBI1 0>;
    interconnect-names = "qup-core", "qup-config",
    "qup-memory";
    + power-domains = <&rpmhpd SC7180_CX>;
    + required-opps = <&rpmhpd_opp_low_svs>;
    status = "disabled";
    };

    spi3: spi@88c000 {
    @@ -975,8 +983,10 @@
    <&gem_noc MASTER_APPSS_PROC 0 &config_noc SLAVE_QUP_0 0>,
    <&aggre1_noc MASTER_QUP_0 0 &mc_virt SLAVE_EBI1 0>;
    interconnect-names = "qup-core", "qup-config",
    "qup-memory";
    + power-domains = <&rpmhpd SC7180_CX>;
    + required-opps = <&rpmhpd_opp_low_svs>;
    status = "disabled";
    };

    uart4: serial@890000 {
    @@ -1009,8 +1019,10 @@
    <&gem_noc MASTER_APPSS_PROC 0 &config_noc SLAVE_QUP_0 0>,
    <&aggre1_noc MASTER_QUP_0 0 &mc_virt SLAVE_EBI1 0>;
    interconnect-names = "qup-core", "qup-config",
    "qup-memory";
    + power-domains = <&rpmhpd SC7180_CX>;
    + required-opps = <&rpmhpd_opp_low_svs>;
    status = "disabled";
    };

    spi5: spi@894000 {
    @@ -1074,8 +1086,10 @@
    <&gem_noc MASTER_APPSS_PROC 0 &config_noc SLAVE_QUP_1 0>,
    <&aggre2_noc MASTER_QUP_1 0 &mc_virt SLAVE_EBI1 0>;
    interconnect-names = "qup-core", "qup-config",
    "qup-memory";
    + power-domains = <&rpmhpd SC7180_CX>;
    + required-opps = <&rpmhpd_opp_low_svs>;
    status = "disabled";
    };

    spi6: spi@a80000 {
    @@ -1126,8 +1140,10 @@
    <&gem_noc MASTER_APPSS_PROC 0 &config_noc SLAVE_QUP_1 0>,
    <&aggre2_noc MASTER_QUP_1 0 &mc_virt SLAVE_EBI1 0>;
    interconnect-names = "qup-core", "qup-config",
    "qup-memory";
    + power-domains = <&rpmhpd SC7180_CX>;
    + required-opps = <&rpmhpd_opp_low_svs>;
    status = "disabled";
    };

    uart7: serial@a84000 {
    @@ -1160,8 +1176,10 @@
    <&gem_noc MASTER_APPSS_PROC 0 &config_noc SLAVE_QUP_1 0>,
    <&aggre2_noc MASTER_QUP_1 0 &mc_virt SLAVE_EBI1 0>;
    interconnect-names = "qup-core", "qup-config",
    "qup-memory";
    + power-domains = <&rpmhpd SC7180_CX>;
    + required-opps = <&rpmhpd_opp_low_svs>;
    status = "disabled";
    };

    spi8: spi@a88000 {
    @@ -1212,8 +1230,10 @@
    <&gem_noc MASTER_APPSS_PROC 0 &config_noc SLAVE_QUP_1 0>,
    <&aggre2_noc MASTER_QUP_1 0 &mc_virt SLAVE_EBI1 0>;
    interconnect-names = "qup-core", "qup-config",
    "qup-memory";
    + power-domains = <&rpmhpd SC7180_CX>;
    + required-opps = <&rpmhpd_opp_low_svs>;
    status = "disabled";
    };

    uart9: serial@a8c000 {
    @@ -1246,8 +1266,10 @@
    <&gem_noc MASTER_APPSS_PROC 0 &config_noc SLAVE_QUP_1 0>,
    <&aggre2_noc MASTER_QUP_1 0 &mc_virt SLAVE_EBI1 0>;
    interconnect-names = "qup-core", "qup-config",
    "qup-memory";
    + power-domains = <&rpmhpd SC7180_CX>;
    + required-opps = <&rpmhpd_opp_low_svs>;
    status = "disabled";
    };

    spi10: spi@a90000 {
    @@ -1298,8 +1320,10 @@
    <&gem_noc MASTER_APPSS_PROC 0 &config_noc SLAVE_QUP_1 0>,
    <&aggre2_noc MASTER_QUP_1 0 &mc_virt SLAVE_EBI1 0>;
    interconnect-names = "qup-core", "qup-config",
    "qup-memory";
    + power-domains = <&rpmhpd SC7180_CX>;
    + required-opps = <&rpmhpd_opp_low_svs>;
    status = "disabled";
    };

    spi11: spi@a94000 {
    --
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