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First little batch of SoC changes for 4.4: 

- a MAINTAINER addition to cover SAMA5 SoCs
 - removal of one unneeded header file
 - for low-level serial output, use the DEBUG_UART_PHYS
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Merge tag 'at91-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91 into next/soc

Merge "First little batch of SoC changes for 4.4" from Nicolas Ferre:

- a MAINTAINER addition to cover SAMA5 SoCs
- removal of one unneeded header file
- for low-level serial output, use the DEBUG_UART_PHYS

* tag 'at91-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91:
  ARM: at91: debug: use DEBUG_UART_PHYS
  ARM: at91: remove useless includes in platform_data/atmel.h
  MAINTAINERS: explicitly add Atmel SAMA5
This commit is contained in:
Arnd Bergmann 2015-10-06 16:43:25 +02:00
parent 6468527318 6f112a08c1
commit d64c5097ff
4 changed files with 21 additions and 48 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
MAINTAINERS
View File

@ -917,7 +917,7 @@ M: Tsahee Zidenberg <tsahee@annapurnalabs.com>
S: Maintained
F: arch/arm/mach-alpine/
ARM/ATMEL AT91RM9200 AND AT91SAM ARM ARCHITECTURES
ARM/ATMEL AT91RM9200, AT91SAM9 AND SAMA5 SOC SUPPORT
M: Nicolas Ferre <nicolas.ferre@atmel.com>
M: Alexandre Belloni <alexandre.belloni@free-electrons.com>
M: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>

41
arch/arm/Kconfig.debug
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@ -123,29 +123,23 @@ choice
0x80020000 | 0xf0020000 | UART8
0x80024000 | 0xf0024000 | UART9
config AT91_DEBUG_LL_DBGU0
bool "Kernel low-level debugging on rm9200, 9260/9g20, 9261/9g10, 9rl, 9x5, 9n12"
select DEBUG_AT91_UART
config DEBUG_AT91_UART
bool "Kernel low-level debugging on Atmel SoCs"
depends on ARCH_AT91
depends on SOC_AT91RM9200 || SOC_AT91SAM9
help
Say Y here if you want the debug print routines to direct
their output to the serial port on atmel devices.
config AT91_DEBUG_LL_DBGU1
bool "Kernel low-level debugging on 9263, 9g45 and sama5d3"
select DEBUG_AT91_UART
depends on ARCH_AT91
depends on SOC_AT91SAM9 || SOC_SAMA5
SOC DEBUG_UART_PHYS DEBUG_UART_VIRT PORT
rm9200, 9260/9g20, 0xfffff200 0xfefff200 DBGU
9261/9g10, 9rl
9263, 9g45, sama5d3 0xffffee00 0xfeffee00 DBGU
sama5d4 0xfc00c000 0xfb00c000 USART3
sama5d4 0xfc069000 0xfb069000 DBGU
sama5d2 0xf8020000 0xf7020000 UART1
config AT91_DEBUG_LL_DBGU2
bool "Kernel low-level debugging on sama5d4"
select DEBUG_AT91_UART
depends on ARCH_AT91
depends on SOC_SAMA5
config AT91_DEBUG_LL_DBGU3
bool "Kernel low-level debugging on sama5d2"
select DEBUG_AT91_UART
depends on ARCH_AT91
depends on SOC_SAMA5
Please adjust DEBUG_UART_PHYS configuration options based on
your needs.
config DEBUG_BCM2835
bool "Kernel low-level debugging on BCM2835 PL011 UART"
@ -1249,10 +1243,6 @@ choice
endchoice
config DEBUG_AT91_UART
bool
depends on ARCH_AT91
config DEBUG_EXYNOS_UART
bool
@ -1485,7 +1475,8 @@ config DEBUG_UART_PHYS
DEBUG_RMOBILE_SCIFA0 || DEBUG_RMOBILE_SCIFA1 || \
DEBUG_RMOBILE_SCIFA4 || DEBUG_S3C24XX_UART || \
DEBUG_UART_BCM63XX || DEBUG_ASM9260_UART || \
DEBUG_SIRFSOC_UART || DEBUG_DIGICOLOR_UA0
DEBUG_SIRFSOC_UART || DEBUG_DIGICOLOR_UA0 || \
DEBUG_AT91_UART
config DEBUG_UART_VIRT
hex "Virtual base address of debug UART"

18
arch/arm/include/debug/at91.S
View File

@ -9,32 +9,22 @@
*
*/
#if defined(CONFIG_AT91_DEBUG_LL_DBGU0)
#define AT91_DBGU 0xfffff200 /* AT91_BASE_DBGU0 */
#elif defined(CONFIG_AT91_DEBUG_LL_DBGU1)
#define AT91_DBGU 0xffffee00 /* AT91_BASE_DBGU1 */
#elif defined(CONFIG_AT91_DEBUG_LL_DBGU2)
/* On sama5d4, use USART3 as low level serial console */
#define AT91_DBGU 0xfc00c000 /* SAMA5D4_BASE_USART3 */
#else
/* On sama5d2, use UART1 as low level serial console */
#define AT91_DBGU 0xf8020000
#endif
#ifdef CONFIG_MMU
#define AT91_IO_P2V(x) ((x) - 0x01000000)
#else
#define AT91_IO_P2V(x) (x)
#endif
#define CONFIG_DEBUG_UART_VIRT AT91_IO_P2V(CONFIG_DEBUG_UART_PHYS)
#define AT91_DBGU_SR (0x14) /* Status Register */
#define AT91_DBGU_THR (0x1c) /* Transmitter Holding Register */
#define AT91_DBGU_TXRDY (1 << 1) /* Transmitter Ready */
#define AT91_DBGU_TXEMPTY (1 << 9) /* Transmitter Empty */
.macro addruart, rp, rv, tmp
ldr \rp, =AT91_DBGU @ System peripherals (phys address)
ldr \rv, =AT91_IO_P2V(AT91_DBGU) @ System peripherals (virt address)
ldr \rp, =CONFIG_DEBUG_UART_PHYS @ System peripherals (phys address)
ldr \rv, =CONFIG_DEBUG_UART_VIRT @ System peripherals (virt address)
.endm
.macro senduart,rd,rx

8
include/linux/platform_data/atmel.h
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@ -9,15 +9,7 @@
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>
#include <linux/device.h>
#include <linux/i2c.h>
#include <linux/leds.h>
#include <linux/spi/spi.h>
#include <linux/usb/atmel_usba_udc.h>
#include <linux/atmel-mci.h>
#include <sound/atmel-ac97c.h>
#include <linux/serial.h>
#include <linux/platform_data/macb.h>
/*
* at91: 6 USARTs and one DBGU port (SAM9260)