The Power Hypervisor code expects to see a pca9554 device connected
to the 3rd PNV I2C engine on port 1 at I2C address 0x25 (or left-
justified address of 0x4A).  This is used by the hypervisor code to
detect if a "Cable Card" is present.

Signed-off-by: Glenn Miles <milesg@linux.vnet.ibm.com>
---

No changes from v2

 hw/misc/Kconfig     | 4 ++++
 hw/misc/meson.build | 1 +
 hw/ppc/Kconfig      | 1 +
 hw/ppc/pnv.c        | 5 +++++
 4 files changed, 11 insertions(+)

diff --git a/hw/misc/Kconfig b/hw/misc/Kconfig
index cc8a8c1418..c347a132c2 100644
--- a/hw/misc/Kconfig
+++ b/hw/misc/Kconfig
@@ -34,6 +34,10 @@ config PCA9552
     bool
     depends on I2C
 
+config PCA9554
+    bool
+    depends on I2C
+
 config I2C_ECHO
     bool
     default y if TEST_DEVICES
diff --git a/hw/misc/meson.build b/hw/misc/meson.build
index 36c20d5637..c39410e4a7 100644
--- a/hw/misc/meson.build
+++ b/hw/misc/meson.build
@@ -4,6 +4,7 @@ system_ss.add(when: 'CONFIG_FW_CFG_DMA', if_true: files('vmcoreinfo.c'))
 system_ss.add(when: 'CONFIG_ISA_DEBUG', if_true: files('debugexit.c'))
 system_ss.add(when: 'CONFIG_ISA_TESTDEV', if_true: files('pc-testdev.c'))
 system_ss.add(when: 'CONFIG_PCA9552', if_true: files('pca9552.c'))
+system_ss.add(when: 'CONFIG_PCA9554', if_true: files('pca9554.c'))
 system_ss.add(when: 'CONFIG_PCI_TESTDEV', if_true: files('pci-testdev.c'))
 system_ss.add(when: 'CONFIG_UNIMP', if_true: files('unimp.c'))
 system_ss.add(when: 'CONFIG_EMPTY_SLOT', if_true: files('empty_slot.c'))
diff --git a/hw/ppc/Kconfig b/hw/ppc/Kconfig
index f77ca773cf..2302778265 100644
--- a/hw/ppc/Kconfig
+++ b/hw/ppc/Kconfig
@@ -33,6 +33,7 @@ config POWERNV
     select FDT_PPC
     select PCI_POWERNV
     select PCA9552
+    select PCA9554
 
 config PPC405
     bool
diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index e82e9b30ec..bbbc4ca868 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -1903,6 +1903,11 @@ static void pnv_chip_power10_realize(DeviceState *dev, Error **errp)
     qdev_connect_gpio_out(DEVICE(hotplug), 4,
                           qdev_get_gpio_in(DEVICE(hotplug), 9));
 
+    /*
+     * Add a PCA9554 I2C device for cable card presence detection
+     * to engine 2, bus 1, address 0x25
+     */
+    i2c_slave_create_simple(chip10->i2c[2].busses[1], "pca9554", 0x25);
 }
 
 static uint32_t pnv_chip_power10_xscom_pcba(PnvChip *chip, uint64_t addr)
-- 
2.31.1