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arm64: dts: freescale: imx8mm/imx8mq: mba8mx: Use PCIe clock generator

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PCIe reference clock is provided by Renesas 9FGV0441. Reference this
instead of a fixed-clock.

Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Alexander Stein 2024-02-20 15:23:06 +01:00 committed by Shawn Guo
parent db5b701ac5
commit 38f408cef1
3 changed files with 29 additions and 27 deletions
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14
arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml-mba8mx.dts
View File

@ -5,6 +5,8 @@
/dts-v1/;
#include <dt-bindings/phy/phy-imx8-pcie.h>
#include "imx8mm-tqma8mqml.dtsi"
#include "mba8mx.dtsi"
@ -74,19 +76,23 @@
};
&pcie_phy {
clocks = <&pcie0_refclk>;
fsl,refclk-pad-mode = <IMX8_PCIE_REFCLK_PAD_INPUT>;
fsl,clkreq-unsupported;
clocks = <&pcieclk 2>;
clock-names = "ref";
status = "okay";
};
/* PCIe slot on X36 */
&pcie0 {
reset-gpio = <&expander0 14 GPIO_ACTIVE_LOW>;
clocks = <&clk IMX8MM_CLK_PCIE1_ROOT>, <&pcie0_refclk>,
clocks = <&clk IMX8MM_CLK_PCIE1_ROOT>, <&pcieclk 3>,
<&clk IMX8MM_CLK_PCIE1_AUX>;
assigned-clocks = <&clk IMX8MM_CLK_PCIE1_AUX>,
<&clk IMX8MM_CLK_PCIE1_CTRL>;
<&clk IMX8MM_CLK_PCIE1_CTRL>;
assigned-clock-rates = <10000000>, <250000000>;
assigned-clock-parents = <&clk IMX8MM_SYS_PLL2_50M>,
<&clk IMX8MM_SYS_PLL2_250M>;
<&clk IMX8MM_SYS_PLL2_250M>;
status = "okay";
};

23
arch/arm64/boot/dts/freescale/imx8mq-tqma8mq-mba8mx.dts
View File

@ -28,18 +28,6 @@
id-gpios = <&gpio1 10 GPIO_ACTIVE_HIGH>;
};
pcie0_refclk: pcie0-refclk {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <100000000>;
};
pcie1_refclk: pcie1-refclk {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <100000000>;
};
reg_otg_vbus: regulator-otg-vbus {
compatible = "regulator-fixed";
pinctrl-names = "default";
@ -103,23 +91,24 @@
gpios = <&gpio3 16 GPIO_ACTIVE_HIGH>;
};
/* PCIe slot on X36 */
&pcie0 {
reset-gpio = <&expander0 14 GPIO_ACTIVE_LOW>;
clocks = <&clk IMX8MQ_CLK_PCIE1_ROOT>,
<&pcie0_refclk>,
<&clk IMX8MQ_CLK_PCIE1_PHY>,
<&pcieclk 3>,
<&pcieclk 2>,
<&clk IMX8MQ_CLK_PCIE1_AUX>;
status = "okay";
};
/*
* miniPCIe, also usable for cards with USB. Therefore configure the reset as
* miniPCIe on X28, also usable for cards with USB. Therefore configure the reset as
* static gpio hog.
*/
&pcie1 {
clocks = <&clk IMX8MQ_CLK_PCIE2_ROOT>,
<&pcie1_refclk>,
<&clk IMX8MQ_CLK_PCIE2_PHY>,
<&pcieclk 1>,
<&pcieclk 0>,
<&clk IMX8MQ_CLK_PCIE2_AUX>;
status = "okay";
};

19
arch/arm64/boot/dts/freescale/mba8mx.dtsi
View File

@ -29,6 +29,12 @@
stdout-path = &uart3;
};
clk_xtal25: clk-xtal25 {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <25000000>;
};
gpio-keys {
compatible = "gpio-keys";
pinctrl-names = "default";
@ -100,12 +106,6 @@
};
};
pcie0_refclk: pcie0-refclk {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <100000000>;
};
reg_12v: regulator-12v {
compatible = "regulator-fixed";
regulator-name = "MBA8MX_12V";
@ -264,6 +264,13 @@
pagesize = <16>;
vcc-supply = <&reg_vcc_3v3>;
};
pcieclk: clk@68 {
compatible = "renesas,9fgv0441";
reg = <0x68>;
clocks = <&clk_xtal25>;
#clock-cells = <1>;
};
};
&i2c3 {