bus: mhi: host: pci_generic: Add support for EM929x and set MRU to 32768 for better performance.

Add MHI controller config for EM929x. It uses the same configuration
as EM919x. Also set the MRU to 32768 to improve downlink throughput.

02:00.0 Unassigned class [ff00]: Qualcomm Technologies, Inc Device 0308
	Subsystem: Device 18d7:0301

Signed-off-by: Adam Xue <[email protected]>
Signed-off-by: Manivannan Sadhasivam <[email protected]>
Link: https://patch.msgid.link/[email protected]

Author: Adam Xue

drivers/bus/mhi/host/pci_generic.c

@@ -698,6 +698,7 @@ static const struct mhi_pci_dev_info mhi_sierra_em919x_info = {
 	.config = &modem_sierra_em919x_config,
 	.bar_num = MHI_PCI_DEFAULT_BAR_NUM,
 	.dma_data_width = 32,
+	.mru_default = 32768,
 	.sideband_wake = false,
 };
 
@@ -855,6 +856,9 @@ static const struct pci_device_id mhi_pci_id_table[] = {
 	/* EM919x (sdx55), use the same vid:pid as qcom-sdx55m */
 	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_QCOM, 0x0306, 0x18d7, 0x0200),
 		.driver_data = (kernel_ulong_t) &mhi_sierra_em919x_info },
+	/* EM929x (sdx65), use the same configuration as EM919x */
+	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_QCOM, 0x0308, 0x18d7, 0x0301),
+		.driver_data = (kernel_ulong_t) &mhi_sierra_em919x_info },
 	/* Telit FN980 hardware revision v1 */
 	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_QCOM, 0x0306, 0x1C5D, 0x2000),
 		.driver_data = (kernel_ulong_t) &mhi_telit_fn980_hw_v1_info },