arch/arm/boot/dts/ti/omap/am3517.dtsi

Source file repositories/reference/linux-study-clean/arch/arm/boot/dts/ti/omap/am3517.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm/boot/dts/ti/omap/am3517.dtsi
Extension
.dtsi
Size
5244 bytes
Lines
221
Domain
Architecture Layer
Bucket
arch/arm
Inferred role
Architecture Layer: configuration, schema, or hardware description
Status
atlas-only

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Device Tree Source for am3517 SoC
 *
 * Copyright (C) 2013 Texas Instruments Incorporated - https://www.ti.com/
 */

#include "omap3.dtsi"

/* AM3517 doesn't appear to have the crypto engines defined in omap3.dtsi */
/delete-node/ &aes1_target;
/delete-node/ &aes2_target;

/ {
	aliases {
		serial3 = &uart4;
		can = &hecc;
		ethernet = &davinci_emac;
	};

	cpus {
		cpu: cpu@0 {
			/* Based on OMAP3630 variants OPP50 and OPP100 */
			operating-points-v2 = <&cpu0_opp_table>;

			clock-latency = <300000>; /* From legacy driver */
		};
	};

	cpu0_opp_table: opp-table {
		compatible = "operating-points-v2-ti-cpu";
		syscon = <&scm_conf>;
		/*
		 * AM3517 TRM only lists 600MHz @ 1.2V, but omap36xx
		 * appear to operate at 300MHz as well. Since AM3517 only
		 * lists one operating voltage, it will remain fixed at 1.2V
		 */
		opp-50-300000000 {
			/* OPP50 */
			opp-hz = /bits/ 64 <300000000>;
			opp-microvolt = <1200000>;
			opp-supported-hw = <0xffffffff 0xffffffff>;
			opp-suspend;
		};

		opp-100-600000000 {
			/* OPP100 */
			opp-hz = /bits/ 64 <600000000>;
			opp-microvolt = <1200000>;
			opp-supported-hw = <0xffffffff 0xffffffff>;
		};
	};

	ocp@68000000 {
		target-module@5c040000 {
			compatible = "ti,sysc-omap2", "ti,sysc";
			reg = <0x5c040400 0x4>,
			      <0x5c040404 0x4>,
			      <0x5c040408 0x4>;
			reg-names = "rev", "sysc", "syss";
			ti,sysc-mask = <(SYSC_OMAP2_ENAWAKEUP |
					 SYSC_OMAP2_SOFTRESET |
					 SYSC_OMAP2_AUTOIDLE)>;
			ti,sysc-midle = <SYSC_IDLE_FORCE>,
					<SYSC_IDLE_NO>,
					<SYSC_IDLE_SMART>;
			ti,sysc-sidle = <SYSC_IDLE_FORCE>,
					<SYSC_IDLE_NO>,
					<SYSC_IDLE_SMART>;
			ti,syss-mask = <1>;

Annotation

Implementation Notes