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UtsavAgarwalADIUtsavAgarwalADI
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arm: mach-sc5xx: Adding init for sc5xx boards
Adding machine specific initialization Signed-off-by: UtsavAgarwalADI <utsav.agarwal@analog.com>
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‎arch/arm/mach-sc5xx/Makefile

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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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obj-y := core.o spu.o
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obj-$(CONFIG_ARCH_SC57X) += sc57x-ezkit.o
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obj-$(CONFIG_ARCH_SC58X) += sc58x-ezkit.o
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obj-$(CONFIG_ARCH_SC59X) += sc59x-ezkit.o

‎arch/arm/mach-sc5xx/core.c

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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Common functionality needed on all ezkits. Things like phy fixup functions, etc.
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*
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* (C) Copyright 2022 - Analog Devices, Inc.
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*
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* Written and/or maintained by Timesys Corporation
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*
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* Contact: Nathan Barrett-Morrison <nathan.morrison@timesys.com>
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* Contact: Greg Malysa <greg.malysa@timesys.com>
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*
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*/
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#include <linux/init.h>
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#include <linux/phy.h>
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#include "core.h"
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#define DP83865_PHY_ID 0x20005c7a
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#define REG_DP83865_AUX_CTRL 0x12
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#define BITP_AUX_CTRL_RGMII_EN 12
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#define RGMII_3COM_MODE 3
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static int dp83865_fixup(struct phy_device *phydev)
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{
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int phy_data = 0;
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phy_data = phy_read(phydev, REG_DP83865_AUX_CTRL);
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/* enable 3com mode for RGMII */
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phy_write(phydev, REG_DP83865_AUX_CTRL,
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(RGMII_3COM_MODE << BITP_AUX_CTRL_RGMII_EN) | phy_data);
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return 0;
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}
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#define DP83848_PHY_ID 0x20005c90
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#define REG_DP83848_PHY_MICR 0x11
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#define BITM_PHY_MICR_INTEN 0x2
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#define BITM_PHY_MICR_INT_OE 0x1
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static int dp83848_fixup(struct phy_device *phydev)
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{
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phy_write(phydev, REG_DP83848_PHY_MICR,
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BITM_PHY_MICR_INTEN | BITM_PHY_MICR_INT_OE);
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return 0;
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}
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void __init sc5xx_init_ethernet(void)
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{
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if (IS_BUILTIN(CONFIG_PHYLIB)) {
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phy_register_fixup_for_uid(DP83865_PHY_ID, 0xffffffff, dp83865_fixup);
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phy_register_fixup_for_uid(DP83848_PHY_ID, 0xffffffff, dp83848_fixup);
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}
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}

‎arch/arm/mach-sc5xx/core.h

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/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* (C) Copyright 2022 - Analog Devices, Inc.
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*
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* Written and/or maintained by Timesys Corporation
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*
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* Contact: Nathan Barrett-Morrison <nathan.morrison@timesys.com>
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* Contact: Greg Malysa <greg.malysa@timesys.com>
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*
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*/
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#ifndef ARCH_SC5XX_CORE_H
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#define ARCH_SC5XX_CORE_H
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#include <linux/init.h>
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void __init sc5xx_init_ethernet(void);
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#endif

‎arch/arm/mach-sc5xx/sc57x-ezkit.c

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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Machine entries for the sc573 ezkit
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*
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* (C) Copyright 2022 - Analog Devices, Inc.
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*
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* Written and/or maintained by Timesys Corporation
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*
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* Contact: Nathan Barrett-Morrison <nathan.morrison@timesys.com>
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* Contact: Greg Malysa <greg.malysa@timesys.com>
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*
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*/
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#include <linux/init.h>
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#include <linux/of_platform.h>
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#include <asm/mach/arch.h>
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#include <asm/siginfo.h>
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#include <asm/signal.h>
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#include "core.h"
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static const char * const sc57x_dt_board_compat[] __initconst = {
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"adi,sc57x",
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NULL
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};
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static bool first_fault = true;
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static int sc57x_abort_handler(unsigned long addr, unsigned int fsr,
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struct pt_regs *regs)
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{
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if (fsr == 0x1c06 && first_fault) {
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first_fault = false;
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/*
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* These faults with code 0x1c06 happens for no good reason,
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* possibly left over from the CFE boot loader.
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*/
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pr_warn("External imprecise Data abort at addr=%#lx, fsr=%#x ignored.\n",
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addr, fsr);
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return 0;
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}
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/* Others should cause a fault */
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return 1;
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}
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static void __init sc57x_init_early(void)
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{
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hook_fault_code(16 + 6, sc57x_abort_handler, SIGBUS, BUS_OBJERR,
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"imprecise external abort");
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}
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static void __init sc57x_init(void)
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{
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pr_info("%s: registering device resources\n", __func__);
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of_platform_default_populate(NULL, NULL, NULL);
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sc5xx_init_ethernet();
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}
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DT_MACHINE_START(SC57X_DT, "SC57x-EZKIT (Device Tree Support)")
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.l2c_aux_val = 0,
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.l2c_aux_mask = ~0,
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.init_early = sc57x_init_early,
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.init_machine = sc57x_init,
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.dt_compat = sc57x_dt_board_compat,
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MACHINE_END

‎arch/arm/mach-sc5xx/sc58x-ezkit.c

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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Machine entries for the sc58x boards (ezkit, mini, etc.)
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*
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* (C) Copyright 2022 - Analog Devices, Inc.
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*
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* Written and/or maintained by Timesys Corporation
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*
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* Contact: Nathan Barrett-Morrison <nathan.morrison@timesys.com>
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* Contact: Greg Malysa <greg.malysa@timesys.com>
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*
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*/
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#include <linux/init.h>
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#include <linux/of_platform.h>
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#include <asm/mach/arch.h>
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#include "core.h"
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static const char * const sc58x_dt_board_compat[] __initconst = {
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"adi,sc58x",
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NULL
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};
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static void __init sc58x_init(void)
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{
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pr_info("%s: registering device resources\n", __func__);
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of_platform_default_populate(NULL, NULL, NULL);
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sc5xx_init_ethernet();
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}
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DT_MACHINE_START(SC58X_DT, "SC58x-EZKIT (Device Tree Support)")
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.l2c_aux_val = 0,
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.l2c_aux_mask = ~0,
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.init_machine = sc58x_init,
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.dt_compat = sc58x_dt_board_compat,
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MACHINE_END

‎arch/arm/mach-sc5xx/sc59x-ezkit.c

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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Machine entries for the sc594 ezkit
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*
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* (C) Copyright 2022 - Analog Devices, Inc.
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*
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* Written and/or maintained by Timesys Corporation
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*
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* Contact: Nathan Barrett-Morrison <nathan.morrison@timesys.com>
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* Contact: Greg Malysa <greg.malysa@timesys.com>
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*
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*/
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#include <linux/init.h>
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#include <linux/of_platform.h>
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#include <asm/mach/arch.h>
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#include <asm/siginfo.h>
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#include <asm/signal.h>
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#include "core.h"
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static const char * const sc59x_dt_board_compat[] __initconst = {
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"adi,sc59x",
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NULL
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};
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static void __init sc59x_init(void)
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{
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pr_info("%s: registering device resources\n", __func__);
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of_platform_default_populate(NULL, NULL, NULL);
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sc5xx_init_ethernet();
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}
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DT_MACHINE_START(SC59X_DT, "SC59x-EZKIT (Device Tree Support)")
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.l2c_aux_val = 0,
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.l2c_aux_mask = ~0,
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.init_machine = sc59x_init,
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.dt_compat = sc59x_dt_board_compat,
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MACHINE_END

‎arch/arm/mach-sc5xx/spu.c

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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Legacy SPU-compatibility layer. No SPU functionality is used currently,
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* this will be removed when it is eliminated from all drivers.
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*
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* (C) Copyright 2022 - Analog Devices, Inc.
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*
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* Written and/or maintained by Timesys Corporation
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*
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* Contact: Nathan Barrett-Morrison <nathan.morrison@timesys.com>
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* Contact: Greg Malysa <greg.malysa@timesys.com>
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*
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*/
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#include <linux/export.h>
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#include <linux/types.h>
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void set_spu_securep_msec(uint16_t n, bool msec)
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{
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(void)n;
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(void)msec;
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}
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EXPORT_SYMBOL(set_spu_securep_msec);

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