linux-kernel - [PATCH] net: stmmac: dwmac-qcom-ethqos: Configure host DMA width

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Date: Wed, 29 May 2024 11:39:04 -0700
From: Sagar Cheluvegowda <quic_scheluve@...cinc.com>
To: Vinod Koul <vkoul@...nel.org>,
        Alexandre Torgue
	<alexandre.torgue@...s.st.com>,
        Jose Abreu <joabreu@...opsys.com>,
        "David S.
 Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        "Jakub
 Kicinski" <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
        Maxime Coquelin
	<mcoquelin.stm32@...il.com>,
        Jochen Henneberg <jh@...neberg-systemdesign.com>
CC: <linux-arm-msm@...r.kernel.org>, <netdev@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
        "Sagar Cheluvegowda" <quic_scheluve@...cinc.com>
Subject: [PATCH] net: stmmac: dwmac-qcom-ethqos: Configure host DMA width

Fixes: 070246e4674b ("net: stmmac: Fix for mismatched host/device DMA address width")
Signed-off-by: Sagar Cheluvegowda <quic_scheluve@...cinc.com>
---
Change-Id: Ifdf3490c6f0dd55afc062974c05acce42d5fb6a7
---
 drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
index e254b21fdb59..65d7370b47d5 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
@@ -93,6 +93,7 @@ struct ethqos_emac_driver_data {
 	bool has_emac_ge_3;
 	const char *link_clk_name;
 	bool has_integrated_pcs;
+	u32 dma_addr_width;
 	struct dwmac4_addrs dwmac4_addrs;
 };
 
@@ -276,6 +277,7 @@ static const struct ethqos_emac_driver_data emac_v4_0_0_data = {
 	.has_emac_ge_3 = true,
 	.link_clk_name = "phyaux",
 	.has_integrated_pcs = true,
+	.dma_addr_width = 36,
 	.dwmac4_addrs = {
 		.dma_chan = 0x00008100,
 		.dma_chan_offset = 0x1000,
@@ -845,6 +847,8 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
 		plat_dat->flags |= STMMAC_FLAG_RX_CLK_RUNS_IN_LPI;
 	if (data->has_integrated_pcs)
 		plat_dat->flags |= STMMAC_FLAG_HAS_INTEGRATED_PCS;
+	if (data->dma_addr_width)
+		plat_dat->host_dma_width = data->dma_addr_width;
 
 	if (ethqos->serdes_phy) {
 		plat_dat->serdes_powerup = qcom_ethqos_serdes_powerup;

---
base-commit: 1b10b390d945a19747d75b34a6e01035ac7b9155
change-id: 20240515-configure_ethernet_host_dma_width-c619d552992d

Best regards,
-- 
Sagar Cheluvegowda <quic_scheluve@...cinc.com>