0f7de49fa3
Old bootloader (same ones which have DT disabled) don't perform any PCIe initialization. The consequence is a freeze during PCIe bring-up on these old u-boot. Same kernel with a newer bootloaders works fine as they contain the corresponding PCIe init code. In this change, we'll add the missing init and make sure the kernel doesn't rely on some preexisting init to get PCIe to work. That includes the following changes: *GPIOs: set function & drive strength *Clocks: add init code for aux & ref clocks *PCIe driver: additional init of the hardware controller Tested 3.18 and 4.1 on an AP148 with bootloader branch 0.0.1 Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org> SVN-Revision: 46557
146 lines
3.1 KiB
Diff
146 lines
3.1 KiB
Diff
From e81de9d28bd0421c236df322872e64edf4ee1852 Mon Sep 17 00:00:00 2001
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From: Mathieu Olivari <mathieu@codeaurora.org>
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Date: Mon, 11 May 2015 16:32:09 -0700
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Subject: [PATCH 7/8] ARM: dts: qcom: add mdio nodes to ap148 & db149
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Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
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---
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arch/arm/boot/dts/qcom-ipq8064-ap148.dts | 40 ++++++++++++++++++++++++++-
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arch/arm/boot/dts/qcom-ipq8064-db149.dts | 46 ++++++++++++++++++++++++++++++++
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2 files changed, 85 insertions(+), 1 deletion(-)
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--- a/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
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+++ b/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
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@@ -19,8 +19,9 @@
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};
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};
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- alias {
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+ aliases {
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serial0 = &uart4;
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+ mdio-gpio0 = &mdio0;
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};
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chosen {
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@@ -61,6 +62,15 @@
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bias-none;
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};
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};
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+
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+ mdio0_pins: mdio0_pins {
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+ mux {
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+ pins = "gpio0", "gpio1";
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+ function = "gpio";
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+ drive-strength = <8>;
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+ bias-disable;
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+ };
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+ };
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};
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gsbi@16300000 {
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@@ -170,5 +180,33 @@
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pinctrl-0 = <&pcie1_pins>;
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pinctrl-names = "default";
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};
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+
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+ mdio0: mdio {
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+ compatible = "virtual,mdio-gpio";
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+ gpios = <&qcom_pinmux 1 0 &qcom_pinmux 0 0>;
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+ pinctrl-0 = <&mdio0_pins>;
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+ pinctrl-names = "default";
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+
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+ phy0: ethernet-phy@0 {
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+ device_type = "ethernet-phy";
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+ reg = <0>;
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+ qca,ar8327-initvals = <
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+ 0x00004 0x7600000 /* PAD0_MODE */
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+ 0x00008 0x1000000 /* PAD5_MODE */
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+ 0x0000c 0x80 /* PAD6_MODE */
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+ 0x000e4 0xaa545 /* MAC_POWER_SEL */
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+ 0x000e0 0xc74164de /* SGMII_CTRL */
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+ 0x0007c 0x4e /* PORT0_STATUS */
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+ 0x00094 0x4e /* PORT6_STATUS */
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+ >;
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+ };
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+
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+ phy4: ethernet-phy@4 {
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+ device_type = "ethernet-phy";
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+ reg = <4>;
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+ };
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+ };
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};
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};
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--- a/arch/arm/boot/dts/qcom-ipq8064-db149.dts
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+++ b/arch/arm/boot/dts/qcom-ipq8064-db149.dts
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@@ -16,6 +16,7 @@
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alias {
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serial0 = &uart2;
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+ mdio-gpio0 = &mdio0;
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};
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chosen {
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@@ -65,6 +66,15 @@
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bias-none;
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};
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};
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+
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+ mdio0_pins: mdio0_pins {
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+ mux {
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+ pins = "gpio0", "gpio1";
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+ function = "gpio";
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+ drive-strength = <8>;
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+ bias-disable;
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+ };
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+ };
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};
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gsbi2: gsbi@12480000 {
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@@ -176,5 +186,44 @@
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pinctrl-0 = <&pcie2_pins>;
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pinctrl-names = "default";
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};
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+
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+ mdio0: mdio {
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+ compatible = "virtual,mdio-gpio";
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+ gpios = <&qcom_pinmux 1 0 &qcom_pinmux 0 0>;
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+
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+ pinctrl-0 = <&mdio0_pins>;
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+ pinctrl-names = "default";
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+
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+ phy0: ethernet-phy@0 {
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+ device_type = "ethernet-phy";
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+ reg = <0>;
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+ qca,ar8327-initvals = <
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+ 0x00004 0x7600000 /* PAD0_MODE */
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+ 0x00008 0x1000000 /* PAD5_MODE */
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+ 0x0000c 0x80 /* PAD6_MODE */
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+ 0x000e4 0xaa545 /* MAC_POWER_SEL */
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+ 0x000e0 0xc74164de /* SGMII_CTRL */
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+ 0x0007c 0x4e /* PORT0_STATUS */
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+ 0x00094 0x4e /* PORT6_STATUS */
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+ >;
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+ };
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+
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+ phy4: ethernet-phy@4 {
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+ device_type = "ethernet-phy";
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+ reg = <4>;
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+ };
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+
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+ phy6: ethernet-phy@6 {
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+ device_type = "ethernet-phy";
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+ reg = <6>;
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+ };
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+
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+ phy7: ethernet-phy@7 {
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+ device_type = "ethernet-phy";
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+ reg = <7>;
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+ };
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+ };
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};
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};
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