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Realtek Arm based SoC for v5.8

Browse source 
Introduce ARCH_REALTEK also for 32-bit arm, and update MAINTAINERS.
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Merge tag 'realtek-soc-for-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/afaerber/linux-realtek into arm/soc

Realtek Arm based SoC for v5.8

Introduce ARCH_REALTEK also for 32-bit arm, and update MAINTAINERS.

* tag 'realtek-soc-for-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/afaerber/linux-realtek:
  MAINTAINERS: Add Realtek arm DT files
  ARM: Prepare Realtek RTD1195

Link: https://lore.kernel.org/r/20200510232158.18477-1-afaerber@suse.de
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2020-05-15 22:56:17 +02:00
commit 125e07629f
6 changed files with 60 additions and 0 deletions
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2
MAINTAINERS
View file

@ -2273,6 +2273,8 @@ L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
L: linux-realtek-soc@lists.infradead.org (moderated for non-subscribers)
S: Maintained
F: Documentation/devicetree/bindings/arm/realtek.yaml
F: arch/arm/boot/dts/rtd*
F: arch/arm/mach-realtek/
F: arch/arm64/boot/dts/realtek/
ARM/RENESAS ARM64 ARCHITECTURE

2
arch/arm/Kconfig
View file

@ -698,6 +698,8 @@ source "arch/arm/mach-qcom/Kconfig"
source "arch/arm/mach-rda/Kconfig"
source "arch/arm/mach-realtek/Kconfig"
source "arch/arm/mach-realview/Kconfig"
source "arch/arm/mach-rockchip/Kconfig"

3
arch/arm/Makefile
View file

@ -148,6 +148,8 @@ head-y := arch/arm/kernel/head$(MMUEXT).o
textofs-y := 0x00008000
# We don't want the htc bootloader to corrupt kernel during resume
textofs-$(CONFIG_PM_H1940) := 0x00108000
# RTD1195 has Boot ROM at start of address space
textofs-$(CONFIG_ARCH_REALTEK) := 0x00108000
# SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory
ifeq ($(CONFIG_ARCH_SA1100),y)
textofs-$(CONFIG_SA1111) := 0x00208000
@ -208,6 +210,7 @@ machine-$(CONFIG_ARCH_PICOXCELL) += picoxcell
machine-$(CONFIG_ARCH_PXA) += pxa
machine-$(CONFIG_ARCH_QCOM) += qcom
machine-$(CONFIG_ARCH_RDA) += rda
machine-$(CONFIG_ARCH_REALTEK) += realtek
machine-$(CONFIG_ARCH_REALVIEW) += realview
machine-$(CONFIG_ARCH_ROCKCHIP) += rockchip
machine-$(CONFIG_ARCH_RPC) += rpc

11
arch/arm/mach-realtek/Kconfig Normal file
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@ -0,0 +1,11 @@
# SPDX-License-Identifier: GPL-2.0-or-later
menuconfig ARCH_REALTEK
bool "Realtek SoCs"
depends on ARCH_MULTI_V7
select ARM_GIC
select ARM_GLOBAL_TIMER
select CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
select GENERIC_IRQ_CHIP
select RESET_CONTROLLER
help
This enables support for the Realtek RTD1195 SoC family.

2
arch/arm/mach-realtek/Makefile Normal file
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@ -0,0 +1,2 @@
# SPDX-License-Identifier: GPL-2.0-or-later
obj-y += rtd1195.o

40
arch/arm/mach-realtek/rtd1195.c Normal file
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@ -0,0 +1,40 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Realtek RTD1195
*
* Copyright (c) 2017-2019 Andreas Färber
*/
#include <linux/memblock.h>
#include <asm/mach/arch.h>
static void __init rtd1195_memblock_remove(phys_addr_t base, phys_addr_t size)
{
int ret;
ret = memblock_remove(base, size);
if (ret)
pr_err("Failed to remove memblock %pa (%d)\n", &base, ret);
}
static void __init rtd1195_reserve(void)
{
/* Exclude boot ROM from RAM */
rtd1195_memblock_remove(0x00000000, 0x0000a800);
/* Exclude peripheral register spaces from RAM */
rtd1195_memblock_remove(0x18000000, 0x00070000);
rtd1195_memblock_remove(0x18100000, 0x01000000);
}
static const char *const rtd1195_dt_compat[] __initconst = {
"realtek,rtd1195",
NULL
};
DT_MACHINE_START(rtd1195, "Realtek RTD1195")
.dt_compat = rtd1195_dt_compat,
.reserve = rtd1195_reserve,
.l2c_aux_val = 0x0,
.l2c_aux_mask = ~0x0,
MACHINE_END