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hw/arm/mps2: Add I2C devices 

From 'Application Note AN385', chapter 3.14:

  The SMM implements a simple SBCon interface based on I2C.

There are 4 SBCon interfaces on the FPGA APB subsystem.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20200617072539.32686-13-f4bug@amsat.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Philippe Mathieu-Daudé 2020-06-17 09:25:37 +02:00 committed by Peter Maydell
parent 58f7f3c452
commit ada45de9ea
2 changed files with 9 additions and 0 deletions
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1
hw/arm/Kconfig
View File

@ -406,6 +406,7 @@ config MPS2
select SPLIT_IRQ
select UNIMP
select CMSDK_APB_WATCHDOG
select VERSATILE_I2C
config FSL_IMX7
bool

8
hw/arm/mps2.c
View File

@ -40,6 +40,7 @@
#include "hw/misc/mps2-scc.h"
#include "hw/misc/mps2-fpgaio.h"
#include "hw/ssi/pl022.h"
#include "hw/i2c/arm_sbcon_i2c.h"
#include "hw/net/lan9118.h"
#include "net/net.h"
#include "hw/watchdog/cmsdk-apb-watchdog.h"
@ -365,6 +366,13 @@ static void mps2_common_init(MachineState *machine)
qdev_get_gpio_in(orgate_dev, j));
}
}
for (i = 0; i < 4; i++) {
static const hwaddr i2cbase[] = {0x40022000, /* Touch */
0x40023000, /* Audio */
0x40029000, /* Shield0 */
0x4002a000}; /* Shield1 */
sysbus_create_simple(TYPE_ARM_SBCON_I2C, i2cbase[i], NULL);
}
/* In hardware this is a LAN9220; the LAN9118 is software compatible
* except that it doesn't support the checksum-offload feature.