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[1/8] ppc/pnv: Add pca9552 to powernv10 for PCIe hotplug power control

Message ID 20231110172248.3885194-2-milesg@linux.vnet.ibm.com
State New
Headers show
Series Add powernv10 I2C devices and tests | expand

Commit Message

Glenn Miles Nov. 10, 2023, 5:22 p.m. UTC 
The Power Hypervisor code expects to see a pca9552 device connected
to the 3rd PNV I2C engine on port 1 at I2C address 0x63 (or left-
justified address of 0xC6).  This is used by hypervisor code to
control PCIe slot power during hotplug events.

Signed-off-by: Glenn Miles <milesg@linux.vnet.ibm.com>
---
 hw/ppc/Kconfig | 1 +
 hw/ppc/pnv.c   | 7 +++++++
 2 files changed, 8 insertions(+)
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Patch

diff --git a/hw/ppc/Kconfig b/hw/ppc/Kconfig
index 56f0475a8e..f77ca773cf 100644
--- a/hw/ppc/Kconfig
+++ b/hw/ppc/Kconfig
@@ -32,6 +32,7 @@  config POWERNV
     select XIVE
     select FDT_PPC
     select PCI_POWERNV
+    select PCA9552
 
 config PPC405
     bool
diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index 9c29727337..7afaf1008f 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -1877,6 +1877,13 @@  static void pnv_chip_power10_realize(DeviceState *dev, Error **errp)
                               qdev_get_gpio_in(DEVICE(&chip10->psi),
                                                PSIHB9_IRQ_SBE_I2C));
     }
+
+    /*
+     * Add a PCA9552 I2C device for PCIe hotplug control
+     * to engine 2, bus 1, address 0x63
+     */
+    i2c_slave_create_simple(chip10->i2c[2].busses[1], "pca9552", 0x63);
+
 }
 
 static uint32_t pnv_chip_power10_xscom_pcba(PnvChip *chip, uint64_t addr)