diff mbox series

[v2,10/10] hw/riscv: microchip_pfsoc: Hook the I2C1 controller

Message ID 1603863010-15807-11-git-send-email-bmeng.cn@gmail.com
State Superseded
Headers show
Series hw/riscv: microchip_pfsoc: Support factory HSS boot out of the box | expand

Commit Message

Bin Meng Oct. 28, 2020, 5:30 a.m. UTC 
From: Bin Meng <bin.meng@windriver.com>

The latest SD card image [1] released by Microchip ships a Linux
kernel with built-in PolarFire SoC I2C driver support. The device
tree file includes the description for the I2C1 node hence kernel
tries to probe the I2C1 device during boot.

It is enough to create an unimplemented device for I2C1 to allow
the kernel to continue booting to the shell.

[1] ftp://ftpsoc.microsemi.com/outgoing/core-image-minimal-dev-icicle-kit-es-sd-20201009141623.rootfs.wic.gz

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>

---

(no changes since v1)

 hw/riscv/microchip_pfsoc.c         | 6 ++++++
 include/hw/riscv/microchip_pfsoc.h | 1 +
 2 files changed, 7 insertions(+)
diff mbox series

Patch

diff --git a/hw/riscv/microchip_pfsoc.c b/hw/riscv/microchip_pfsoc.c
index 5e31b84..d13d6ba 100644
--- a/hw/riscv/microchip_pfsoc.c
+++ b/hw/riscv/microchip_pfsoc.c
@@ -113,6 +113,7 @@  static const struct MemmapEntry {
     [MICROCHIP_PFSOC_MMUART2] =         { 0x20102000,     0x1000 },
     [MICROCHIP_PFSOC_MMUART3] =         { 0x20104000,     0x1000 },
     [MICROCHIP_PFSOC_MMUART4] =         { 0x20106000,     0x1000 },
+    [MICROCHIP_PFSOC_I2C1] =            { 0x2010b000,     0x1000 },
     [MICROCHIP_PFSOC_GEM0] =            { 0x20110000,     0x2000 },
     [MICROCHIP_PFSOC_GEM1] =            { 0x20112000,     0x2000 },
     [MICROCHIP_PFSOC_GPIO0] =           { 0x20120000,     0x1000 },
@@ -343,6 +344,11 @@  static void microchip_pfsoc_soc_realize(DeviceState *dev, Error **errp)
         qdev_get_gpio_in(DEVICE(s->plic), MICROCHIP_PFSOC_MMUART4_IRQ),
         serial_hd(4));
 
+    /* I2C1 */
+    create_unimplemented_device("microchip.pfsoc.i2c1",
+        memmap[MICROCHIP_PFSOC_I2C1].base,
+        memmap[MICROCHIP_PFSOC_I2C1].size);
+
     /* GEMs */
 
     nd = &nd_table[0];
diff --git a/include/hw/riscv/microchip_pfsoc.h b/include/hw/riscv/microchip_pfsoc.h
index db77e9c..51d4463 100644
--- a/include/hw/riscv/microchip_pfsoc.h
+++ b/include/hw/riscv/microchip_pfsoc.h
@@ -97,6 +97,7 @@  enum {
     MICROCHIP_PFSOC_MMUART2,
     MICROCHIP_PFSOC_MMUART3,
     MICROCHIP_PFSOC_MMUART4,
+    MICROCHIP_PFSOC_I2C1,
     MICROCHIP_PFSOC_GEM0,
     MICROCHIP_PFSOC_GEM1,
     MICROCHIP_PFSOC_GPIO0,