From: Bhupesh Sharma <bhupesh.sharma@linaro.org>
To: linux-arm-msm@vger.kernel.org
Cc: bhupesh.sharma@linaro.org, bhupesh.linux@gmail.com,
linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
robh+dt@kernel.org, agross@kernel.org, sboyd@kernel.org,
tdas@codeaurora.org, mturquette@baylibre.com,
linux-clk@vger.kernel.org, bjorn.andersson@linaro.org,
davem@davemloft.net, netdev@vger.kernel.org
Subject: [PATCH 6/8] net: stmmac: dwmac-qcom-ethqos: Adjust rgmii loopback_en per platform
Date: Thu, 27 Jan 2022 03:47:23 +0530 [thread overview]
Message-ID: <20220126221725.710167-7-bhupesh.sharma@linaro.org> (raw)
In-Reply-To: <20220126221725.710167-1-bhupesh.sharma@linaro.org>
From: Bjorn Andersson <bjorn.andersson@linaro.org>
Not all platforms should have RGMII_CONFIG_LOOPBACK_EN and the result it
about 50% packet loss on incoming messages. So make it possile to
configure this per compatible and enable it for QCS404.
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
---
.../stmicro/stmmac/dwmac-qcom-ethqos.c | 22 +++++++++++++++----
1 file changed, 18 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
index 8cdba9d521ec..0cc28c79cc61 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
@@ -78,6 +78,7 @@ struct ethqos_emac_por {
struct ethqos_emac_driver_data {
const struct ethqos_emac_por *por;
unsigned int num_por;
+ bool rgmii_config_looback_en;
};
struct qcom_ethqos {
@@ -90,6 +91,7 @@ struct qcom_ethqos {
const struct ethqos_emac_por *por;
unsigned int num_por;
+ bool rgmii_config_looback_en;
};
static int rgmii_readl(struct qcom_ethqos *ethqos, unsigned int offset)
@@ -181,6 +183,7 @@ static const struct ethqos_emac_por emac_v2_3_0_por[] = {
static const struct ethqos_emac_driver_data emac_v2_3_0_data = {
.por = emac_v2_3_0_por,
.num_por = ARRAY_SIZE(emac_v2_3_0_por),
+ .rgmii_config_looback_en = true,
};
static const struct ethqos_emac_por emac_v2_1_0_por[] = {
@@ -195,6 +198,7 @@ static const struct ethqos_emac_por emac_v2_1_0_por[] = {
static const struct ethqos_emac_driver_data emac_v2_1_0_data = {
.por = emac_v2_1_0_por,
.num_por = ARRAY_SIZE(emac_v2_1_0_por),
+ .rgmii_config_looback_en = false,
};
static int ethqos_dll_configure(struct qcom_ethqos *ethqos)
@@ -311,8 +315,12 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
rgmii_updatel(ethqos, SDCC_DDR_CONFIG_PRG_DLY_EN,
SDCC_DDR_CONFIG_PRG_DLY_EN,
SDCC_HC_REG_DDR_CONFIG);
- rgmii_updatel(ethqos, RGMII_CONFIG_LOOPBACK_EN,
- RGMII_CONFIG_LOOPBACK_EN, RGMII_IO_MACRO_CONFIG);
+ if (ethqos->rgmii_config_looback_en)
+ rgmii_updatel(ethqos, RGMII_CONFIG_LOOPBACK_EN,
+ RGMII_CONFIG_LOOPBACK_EN, RGMII_IO_MACRO_CONFIG);
+ else
+ rgmii_updatel(ethqos, RGMII_CONFIG_LOOPBACK_EN,
+ 0, RGMII_IO_MACRO_CONFIG);
break;
case SPEED_100:
@@ -345,8 +353,13 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
rgmii_updatel(ethqos, SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY_EN,
SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY_EN,
SDCC_HC_REG_DDR_CONFIG);
- rgmii_updatel(ethqos, RGMII_CONFIG_LOOPBACK_EN,
- RGMII_CONFIG_LOOPBACK_EN, RGMII_IO_MACRO_CONFIG);
+ if (ethqos->rgmii_config_looback_en)
+ rgmii_updatel(ethqos, RGMII_CONFIG_LOOPBACK_EN,
+ RGMII_CONFIG_LOOPBACK_EN, RGMII_IO_MACRO_CONFIG);
+ else
+ rgmii_updatel(ethqos, RGMII_CONFIG_LOOPBACK_EN,
+ 0, RGMII_IO_MACRO_CONFIG);
+
break;
case SPEED_10:
@@ -518,6 +531,7 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
data = of_device_get_match_data(&pdev->dev);
ethqos->por = data->por;
ethqos->num_por = data->num_por;
+ ethqos->rgmii_config_looback_en = data->rgmii_config_looback_en;
ethqos->rgmii_clk = devm_clk_get(&pdev->dev, "rgmii");
if (IS_ERR(ethqos->rgmii_clk)) {
--
2.34.1
next prev parent reply other threads:[~2022-01-26 22:18 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-26 22:17 [PATCH 0/8] Add ethernet support for Qualcomm SA8155p-ADP board Bhupesh Sharma
2022-01-26 22:17 ` [PATCH 1/8] dt-bindings: net: qcom,ethqos: Document SM8150 SoC compatible Bhupesh Sharma
2022-02-09 3:34 ` Rob Herring
2022-01-26 22:17 ` [PATCH 2/8] net: stmmac: Add support for SM8150 Bhupesh Sharma
2022-02-01 0:07 ` Bjorn Andersson
2022-03-01 19:31 ` Bhupesh Sharma
2022-01-26 22:17 ` [PATCH 3/8] clk: qcom: gcc: Add PCIe, EMAC and UFS GDSCs " Bhupesh Sharma
2022-02-01 0:09 ` Bjorn Andersson
2022-03-01 19:33 ` Bhupesh Sharma
2022-01-26 22:17 ` [PATCH 4/8] arm64: dts: qcom: sm8150: add ethernet node Bhupesh Sharma
2022-01-26 22:17 ` [PATCH 5/8] arm64: dts: qcom: sa8155p-adp: Enable " Bhupesh Sharma
2022-01-27 0:07 ` Andrew Lunn
2022-03-01 20:33 ` Bhupesh Sharma
2022-01-26 22:17 ` Bhupesh Sharma [this message]
2022-01-26 22:17 ` [PATCH 7/8] clk: qcom: gcc-sm8150: use runtime PM for the clock controller Bhupesh Sharma
2022-01-26 22:34 ` Dmitry Baryshkov
2022-03-01 8:22 ` Bhupesh Sharma
2022-02-01 0:01 ` Bjorn Andersson
2022-03-01 19:39 ` Bhupesh Sharma
2022-01-26 22:17 ` [PATCH 8/8] clk: qcom: gcc-sm8150: Use PWRSTS_ON (only) as a workaround for emac gdsc Bhupesh Sharma
2022-02-01 0:05 ` Bjorn Andersson
2022-03-01 19:44 ` Bhupesh Sharma
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220126221725.710167-7-bhupesh.sharma@linaro.org \
--to=bhupesh.sharma@linaro.org \
--cc=agross@kernel.org \
--cc=bhupesh.linux@gmail.com \
--cc=bjorn.andersson@linaro.org \
--cc=davem@davemloft.net \
--cc=devicetree@vger.kernel.org \
--cc=linux-arm-msm@vger.kernel.org \
--cc=linux-clk@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mturquette@baylibre.com \
--cc=netdev@vger.kernel.org \
--cc=robh+dt@kernel.org \
--cc=sboyd@kernel.org \
--cc=tdas@codeaurora.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).