linux-kernel - [PATCH net v3] bus: mhi: Add mru

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Date:   Wed, 19 Jan 2022 18:09:22 +0800
From:   Slark Xiao <slark_xiao@....com>
To:     mani@...nel.org, hemantk@...eaurora.org
Cc:     mhi@...ts.linux.dev, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, Slark Xiao <slark_xiao@....com>
Subject: [PATCH net v3] bus: mhi: Add mru_default for Foxconn SDX55

For default mechanism, product would use default MRU 3500 if
they didn't define it. But for Foxconn SDX55, there is a known
issue which MRU 3500 would lead to data connection lost.
So we align it with Qualcomm default MRU settings.

Fixes: aac426562f56 ("bus: mhi: pci_generic: Introduce Foxconn T99W175 support")
Signed-off-by: Slark Xiao <slark_xiao@....com>
Reviewed-by: Manivannan Sadhasivam <mani@...nel.org>
---
 drivers/bus/mhi/pci_generic.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/bus/mhi/pci_generic.c b/drivers/bus/mhi/pci_generic.c
index 3a258a677df8..74e8fc342cfd 100644
--- a/drivers/bus/mhi/pci_generic.c
+++ b/drivers/bus/mhi/pci_generic.c
@@ -366,6 +366,7 @@ static const struct mhi_pci_dev_info mhi_foxconn_sdx55_info = {
 	.config = &modem_foxconn_sdx55_config,
 	.bar_num = MHI_PCI_DEFAULT_BAR_NUM,
 	.dma_data_width = 32,
+	.mru_default = 32768,
 	.sideband_wake = false,
 };
 
-- 
2.25.1