ARM: dts: dra72-evm: Remove pinmux configurations for erratum i869

Pinmuxing for DRA7x/AM57x family of processors need to be done in IO
isolation as part of initial bootloader executed from SRAM. This is
done as part of iodelay configuration sequence and is required due
to the limitations introduced by erratum ID: i869[1] (IO Glitches
can occur when changing IO settings) and elaborated in the Technical
Reference Manual[2] 18.4.6.1.7 Isolation Requirements.

Only peripheral that is permitted for dynamic pin mux configuration
is MMC and DCAN. MMC is permitted to change to accommodate the
requirements for varied speeds (which require IO-delay support in
kernel as well). DCAN is a result of i893[1] (DCAN initialization
sequence). With the exception of DCAN and MMC, all other pin mux
configurations are removed from the dts.

[1] http://www.ti.com/lit/er/sprz436a/sprz436a.pdf
[2] http://www.ti.com/lit/ug/spruhz7c/spruhz7c.pdf

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/boot/dts/dra72-evm-common.dtsi b/arch/arm/boot/dts/dra72-evm-common.dtsi
index c94d8d6..3c02612 100644 (file)
--- a/arch/arm/boot/dts/dra72-evm-common.dtsi
+++ b/arch/arm/boot/dts/dra72-evm-common.dtsi
@@ -69,9 +69,6 @@
        tpd12s015: encoder {
                compatible = "ti,tpd12s015";
 
-               pinctrl-names = "default";
-               pinctrl-0 = <&tpd12s015_pins>;
-
                gpios = <&pcf_hdmi 4 GPIO_ACTIVE_HIGH>, /* P4, CT CP HPD */
                        <&pcf_hdmi 5 GPIO_ACTIVE_HIGH>, /* P5, LS OE */
                        <&gpio7 12 GPIO_ACTIVE_HIGH>;   /* gpio7_12/sp1_cs2, HPD */
@@ -134,72 +131,6 @@
 };
 
 &dra7_pmx_core {
-       i2c1_pins: pinmux_i2c1_pins {
-               pinctrl-single,pins = <
-                       DRA7XX_CORE_IOPAD(0x3800, PIN_INPUT | MUX_MODE0) /* i2c1_sda.i2c1_sda */
-                       DRA7XX_CORE_IOPAD(0x3804, PIN_INPUT | MUX_MODE0) /* i2c1_scl.i2c1_scl */
-               >;
-       };
-
-       i2c5_pins: pinmux_i2c5_pins {
-               pinctrl-single,pins = <
-                       DRA7XX_CORE_IOPAD(0x36b4, PIN_INPUT | MUX_MODE10) /* mcasp1_axr0.i2c5_sda */
-                       DRA7XX_CORE_IOPAD(0x36b8, PIN_INPUT | MUX_MODE10) /* mcasp1_axr1.i2c5_scl */
-               >;
-       };
-
-       i2c5_pins: pinmux_i2c5_pins {
-               pinctrl-single,pins = <
-                       DRA7XX_CORE_IOPAD(0x36b4, PIN_INPUT | MUX_MODE10) /* mcasp1_axr0.i2c5_sda */
-                       DRA7XX_CORE_IOPAD(0x36b8, PIN_INPUT | MUX_MODE10) /* mcasp1_axr1.i2c5_scl */
-               >;
-       };
-
-       nand_default: nand_default {
-               pinctrl-single,pins = <
-                       DRA7XX_CORE_IOPAD(0x3400, PIN_INPUT  | MUX_MODE0) /* gpmc_ad0 */
-                       DRA7XX_CORE_IOPAD(0x3404, PIN_INPUT  | MUX_MODE0) /* gpmc_ad1 */
-                       DRA7XX_CORE_IOPAD(0x3408, PIN_INPUT  | MUX_MODE0) /* gpmc_ad2 */
-                       DRA7XX_CORE_IOPAD(0x340c, PIN_INPUT  | MUX_MODE0) /* gpmc_ad3 */
-                       DRA7XX_CORE_IOPAD(0x3410, PIN_INPUT  | MUX_MODE0) /* gpmc_ad4 */
-                       DRA7XX_CORE_IOPAD(0x3414, PIN_INPUT  | MUX_MODE0) /* gpmc_ad5 */
-                       DRA7XX_CORE_IOPAD(0x3418, PIN_INPUT  | MUX_MODE0) /* gpmc_ad6 */
-                       DRA7XX_CORE_IOPAD(0x341c, PIN_INPUT  | MUX_MODE0) /* gpmc_ad7 */
-                       DRA7XX_CORE_IOPAD(0x3420, PIN_INPUT  | MUX_MODE0) /* gpmc_ad8 */
-                       DRA7XX_CORE_IOPAD(0x3424, PIN_INPUT  | MUX_MODE0) /* gpmc_ad9 */
-                       DRA7XX_CORE_IOPAD(0x3428, PIN_INPUT  | MUX_MODE0) /* gpmc_ad10 */
-                       DRA7XX_CORE_IOPAD(0x342c, PIN_INPUT  | MUX_MODE0) /* gpmc_ad11 */
-                       DRA7XX_CORE_IOPAD(0x3430, PIN_INPUT  | MUX_MODE0) /* gpmc_ad12 */
-                       DRA7XX_CORE_IOPAD(0x3434, PIN_INPUT  | MUX_MODE0) /* gpmc_ad13 */
-                       DRA7XX_CORE_IOPAD(0x3438, PIN_INPUT  | MUX_MODE0) /* gpmc_ad14 */
-                       DRA7XX_CORE_IOPAD(0x343c, PIN_INPUT  | MUX_MODE0) /* gpmc_ad15 */
-                       DRA7XX_CORE_IOPAD(0x34b4, PIN_OUTPUT | MUX_MODE0) /* gpmc_cs0 */
-                       DRA7XX_CORE_IOPAD(0x34c4, PIN_OUTPUT | MUX_MODE0) /* gpmc_advn_ale */
-                       DRA7XX_CORE_IOPAD(0x34cc, PIN_OUTPUT | MUX_MODE0) /* gpmc_wen */
-                       DRA7XX_CORE_IOPAD(0x34c8, PIN_OUTPUT | MUX_MODE0) /* gpmc_oen_ren */
-                       DRA7XX_CORE_IOPAD(0x34d0, PIN_OUTPUT | MUX_MODE0) /* gpmc_ben0 */
-                       DRA7XX_CORE_IOPAD(0x34d8, PIN_INPUT  | MUX_MODE0) /* gpmc_wait0 */
-               >;
-       };
-
-       usb1_pins: pinmux_usb1_pins {
-               pinctrl-single,pins = <
-                       DRA7XX_CORE_IOPAD(0x3680, PIN_INPUT_SLEW | MUX_MODE0) /* usb1_drvvbus */
-               >;
-       };
-
-       usb2_pins: pinmux_usb2_pins {
-               pinctrl-single,pins = <
-                       DRA7XX_CORE_IOPAD(0x3684, PIN_INPUT_SLEW | MUX_MODE0) /* usb2_drvvbus */
-               >;
-       };
-
-       tps65917_pins_default: tps65917_pins_default {
-               pinctrl-single,pins = <
-                       DRA7XX_CORE_IOPAD(0x3824, PIN_INPUT_PULLUP | MUX_MODE1) /* wakeup3.sys_nirq1 */
-               >;
-       };
-
        mmc1_pins_default: mmc1_pins_default {
                pinctrl-single,pins = <
                        DRA7XX_CORE_IOPAD(0x376c, PIN_INPUT | MUX_MODE14)       /* mmc1sdcd.gpio219 */
@@ -240,59 +171,16 @@
                        DRA7XX_CORE_IOPAD(0x3818, MUX_MODE15 | PULL_UP) /* wakeup0.off */
                >;
        };
-
-       hdmi_pins: pinmux_hdmi_pins {
-               pinctrl-single,pins = <
-                       DRA7XX_CORE_IOPAD(0x3808, PIN_INPUT | MUX_MODE1) /* i2c2_sda.hdmi1_ddc_scl */
-                       DRA7XX_CORE_IOPAD(0x380c, PIN_INPUT | MUX_MODE1) /* i2c2_scl.hdmi1_ddc_sda */
-               >;
-       };
-
-       tpd12s015_pins: pinmux_tpd12s015_pins {
-               pinctrl-single,pins = <
-                       DRA7XX_CORE_IOPAD(0x37b8, PIN_INPUT_PULLDOWN | MUX_MODE14) /* gpio7_12 HPD */
-               >;
-       };
-
-       atl_pins: pinmux_atl_pins {
-               pinctrl-single,pins = <
-                       DRA7XX_CORE_IOPAD(0x3698, PIN_OUTPUT | MUX_MODE5)       /* xref_clk1.atl_clk1 */
-                       DRA7XX_CORE_IOPAD(0x369c, PIN_OUTPUT | MUX_MODE5)       /* xref_clk2.atl_clk2 */
-               >;
-       };
-
-       mcasp3_pins: pinmux_mcasp3_pins {
-               pinctrl-single,pins = <
-                       DRA7XX_CORE_IOPAD(0x3724, PIN_OUTPUT_PULLDOWN | MUX_MODE0)      /* mcasp3_aclkx */
-                       DRA7XX_CORE_IOPAD(0x3728, PIN_OUTPUT_PULLDOWN | MUX_MODE0)      /* mcasp3_fsx */
-                       DRA7XX_CORE_IOPAD(0x372c, PIN_OUTPUT_PULLDOWN | MUX_MODE0)      /* mcasp3_axr0 */
-                       DRA7XX_CORE_IOPAD(0x3730, PIN_INPUT_PULLDOWN | MUX_MODE0)       /* mcasp3_axr1 */
-               >;
-       };
-
-       mcasp3_sleep_pins: pinmux_mcasp3_sleep_pins {
-               pinctrl-single,pins = <
-                       DRA7XX_CORE_IOPAD(0x3724, PIN_INPUT_PULLDOWN | MUX_MODE15)
-                       DRA7XX_CORE_IOPAD(0x3728, PIN_INPUT_PULLDOWN | MUX_MODE15)
-                       DRA7XX_CORE_IOPAD(0x372c, PIN_INPUT_PULLDOWN | MUX_MODE15)
-                       DRA7XX_CORE_IOPAD(0x3730, PIN_INPUT_PULLDOWN | MUX_MODE15)
-               >;
-       };
 };
 
 &i2c1 {
        status = "okay";
-       pinctrl-names = "default";
-       pinctrl-0 = <&i2c1_pins>;
        clock-frequency = <400000>;
 
        tps65917: tps65917@58 {
                compatible = "ti,tps65917";
                reg = <0x58>;
 
-               pinctrl-names = "default";
-               pinctrl-0 = <&tps65917_pins_default>;
-
                interrupts = <GIC_SPI 2 IRQ_TYPE_NONE>;  /* IRQ_SYS_1N */
                interrupt-controller;
                #interrupt-cells = <2>;
@@ -423,8 +311,6 @@
 
 &i2c5 {
        status = "okay";
-       pinctrl-names = "default";
-       pinctrl-0 = <&i2c5_pins>;
        clock-frequency = <400000>;
 
        pcf_hdmi: pcf8575@26 {
@@ -462,8 +348,6 @@
 
 &gpmc {
        status = "okay";
-       pinctrl-names = "default";
-       pinctrl-0 = <&nand_default>;
        ranges = <0 0 0x08000000 0x01000000>;   /* minimum GPMC partition = 16MB */
        nand@0,0 {
                /* To use NAND, DIP switch SW5 must be set like so:
@@ -566,14 +450,10 @@
 
 &usb1 {
        dr_mode = "peripheral";
-       pinctrl-names = "default";
-       pinctrl-0 = <&usb1_pins>;
 };
 
 &usb2 {
        dr_mode = "host";
-       pinctrl-names = "default";
-       pinctrl-0 = <&usb2_pins>;
 };
 
 &mmc1 {
@@ -603,71 +483,8 @@
        max-frequency = <192000000>;
 };
 
-&dra7_pmx_core {
-       cpsw_default: cpsw_default {
-               pinctrl-single,pins = <
-                       /* Slave 2 */
-                       DRA7XX_CORE_IOPAD(0x3598, PIN_OUTPUT | MUX_MODE3)       /* vin2a_d12.rgmii1_txc */
-                       DRA7XX_CORE_IOPAD(0x359c, PIN_OUTPUT | MUX_MODE3)       /* vin2a_d13.rgmii1_tctl */
-                       DRA7XX_CORE_IOPAD(0x35a0, PIN_OUTPUT | MUX_MODE3)       /* vin2a_d14.rgmii1_td3 */
-                       DRA7XX_CORE_IOPAD(0x35a4, PIN_OUTPUT | MUX_MODE3)       /* vin2a_d15.rgmii1_td2 */
-                       DRA7XX_CORE_IOPAD(0x35a8, PIN_OUTPUT | MUX_MODE3)       /* vin2a_d16.rgmii1_td1 */
-                       DRA7XX_CORE_IOPAD(0x35ac, PIN_OUTPUT | MUX_MODE3)       /* vin2a_d17.rgmii1_td0 */
-                       DRA7XX_CORE_IOPAD(0x35b0, PIN_INPUT | MUX_MODE3)        /* vin2a_d18.rgmii1_rclk */
-                       DRA7XX_CORE_IOPAD(0x35b4, PIN_INPUT | MUX_MODE3)        /* vin2a_d19.rgmii1_rctl */
-                       DRA7XX_CORE_IOPAD(0x35b8, PIN_INPUT | MUX_MODE3)        /* vin2a_d20.rgmii1_rd3 */
-                       DRA7XX_CORE_IOPAD(0x35bc, PIN_INPUT | MUX_MODE3)        /* vin2a_d21.rgmii1_rd2 */
-                       DRA7XX_CORE_IOPAD(0x35c0, PIN_INPUT | MUX_MODE3)        /* vin2a_d22.rgmii1_rd1 */
-                       DRA7XX_CORE_IOPAD(0x35c4, PIN_INPUT | MUX_MODE3)        /* vin2a_d23.rgmii1_rd0 */
-               >;
-
-       };
-
-       cpsw_sleep: cpsw_sleep {
-               pinctrl-single,pins = <
-                       /* Slave 2 */
-                       DRA7XX_CORE_IOPAD(0x3598, MUX_MODE15)
-                       DRA7XX_CORE_IOPAD(0x359c, MUX_MODE15)
-                       DRA7XX_CORE_IOPAD(0x35a0, MUX_MODE15)
-                       DRA7XX_CORE_IOPAD(0x35a4, MUX_MODE15)
-                       DRA7XX_CORE_IOPAD(0x35a8, MUX_MODE15)
-                       DRA7XX_CORE_IOPAD(0x35ac, MUX_MODE15)
-                       DRA7XX_CORE_IOPAD(0x35b0, MUX_MODE15)
-                       DRA7XX_CORE_IOPAD(0x35b4, MUX_MODE15)
-                       DRA7XX_CORE_IOPAD(0x35b8, MUX_MODE15)
-                       DRA7XX_CORE_IOPAD(0x35bc, MUX_MODE15)
-                       DRA7XX_CORE_IOPAD(0x35c0, MUX_MODE15)
-                       DRA7XX_CORE_IOPAD(0x35c4, MUX_MODE15)
-               >;
-       };
-
-       davinci_mdio_default: davinci_mdio_default {
-               pinctrl-single,pins = <
-                       /* MDIO */
-                       DRA7XX_CORE_IOPAD(0x363c, PIN_OUTPUT_PULLUP | MUX_MODE0)        /* mdio_d.mdio_d */
-                       DRA7XX_CORE_IOPAD(0x3640, PIN_INPUT_PULLUP | MUX_MODE0) /* mdio_clk.mdio_clk */
-               >;
-       };
-
-       davinci_mdio_sleep: davinci_mdio_sleep {
-               pinctrl-single,pins = <
-                       DRA7XX_CORE_IOPAD(0x363c, MUX_MODE15)
-                       DRA7XX_CORE_IOPAD(0x3640, MUX_MODE15)
-               >;
-       };
-};
-
 &mac {
        status = "okay";
-       pinctrl-names = "default", "sleep";
-       pinctrl-0 = <&cpsw_default>;
-       pinctrl-1 = <&cpsw_sleep>;
-};
-
-&davinci_mdio {
-       pinctrl-names = "default", "sleep";
-       pinctrl-0 = <&davinci_mdio_default>;
-       pinctrl-1 = <&davinci_mdio_sleep>;
 };
 
 &dcan1 {
@@ -748,9 +565,6 @@
 &hdmi {
        status = "ok";
 
-       pinctrl-names = "default";
-       pinctrl-0 = <&hdmi_pins>;
-
        port {
                hdmi_out: endpoint {
                        remote-endpoint = <&tpd12s015_in>;
@@ -759,9 +573,6 @@
 };
 
 &atl {
-       pinctrl-names = "default";
-       pinctrl-0 = <&atl_pins>;
-
        assigned-clocks = <&abe_dpll_sys_clk_mux>,
                          <&atl_gfclk_mux>,
                          <&dpll_abe_ck>,
@@ -780,9 +591,6 @@
 
 &mcasp3 {
        #sound-dai-cells = <0>;
-       pinctrl-names = "default", "sleep";
-       pinctrl-0 = <&mcasp3_pins>;
-       pinctrl-1 = <&mcasp3_sleep_pins>;
 
        assigned-clocks = <&mcasp3_ahclkx_mux>;
        assigned-clock-parents = <&atl_clkin2_ck>;