Christian Marangi
c5427d4cbe
Migrate Airoha PCS/Ethernet pending patch to PCS standalone implementation. This new implementation drop the hack of reading and accessing the dev from a different device and drop the legacy pcs_create/drop implementation in favor of fwnode one with a provider/consumer approach. This is also to sync with the proposed series posted upstream for revision. The new PCS patch for AN7581 implement full support for USB and PCIe PCS. Link: https://github.com/openwrt/openwrt/pull/23271 Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
64 lines
2.2 KiB
Diff
64 lines
2.2 KiB
Diff
From 961800f3badd72e4efda39f219ac4cbec5791433 Mon Sep 17 00:00:00 2001
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From: Christian Marangi <ansuelsmth@gmail.com>
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Date: Sat, 26 Jul 2025 22:58:10 +0200
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Subject: [PATCH 7/8] net: pcs: airoha: add support for optional xfi reset line
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On Airoha AN7583 there is a dedicated reset line for the PON XFI Serdes.
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This is needed to permit changing the WAN sel register or the system
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will stall on accessing the XFI register.
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Add support for this optional dedicated reset to permit correct
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configuration of the PON Serdes.
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Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
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---
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drivers/net/pcs/airoha/pcs-airoha-common.c | 12 ++++++++++++
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drivers/net/pcs/airoha/pcs-airoha.h | 1 +
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2 files changed, 13 insertions(+)
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--- a/drivers/net/pcs/airoha/pcs-airoha-common.c
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+++ b/drivers/net/pcs/airoha/pcs-airoha-common.c
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@@ -144,6 +144,10 @@ static int airoha_pcs_setup_scu(struct a
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const struct airoha_pcs_match_data *data = priv->data;
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int ret;
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+ ret = reset_control_assert(priv->xfi_rst);
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+ if (ret)
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+ return ret;
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+
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switch (data->port_type) {
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case AIROHA_PCS_ETH:
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airoha_pcs_setup_scu_eth(priv, interface);
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@@ -161,6 +165,10 @@ static int airoha_pcs_setup_scu(struct a
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break;
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}
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+ ret = reset_control_deassert(priv->xfi_rst);
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+ if (ret)
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+ return ret;
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+
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/* TODO better handle reset from MAC */
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ret = reset_control_bulk_assert(ARRAY_SIZE(priv->rsts),
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priv->rsts);
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@@ -1298,6 +1306,10 @@ static int airoha_pcs_probe(struct platf
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if (ret)
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return dev_err_probe(dev, ret, "failed to get bulk reset lines\n");
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+ priv->xfi_rst = devm_reset_control_get_optional_exclusive(dev, "xfi");
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+ if (IS_ERR(priv->xfi_rst))
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+ return dev_err_probe(dev, PTR_ERR(priv->xfi_rst), "failed to get xfi reset lines\n");
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+
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/* For Ethernet PCS, read the AN7581 SoC revision to check if
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* manual rx calibration is needed. This is only limited to
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* any SoC revision before E2.
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--- a/drivers/net/pcs/airoha/pcs-airoha.h
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+++ b/drivers/net/pcs/airoha/pcs-airoha.h
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@@ -1654,6 +1654,7 @@ struct airoha_pcs_priv {
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struct regmap *pcs_ana;
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struct regmap_field **pcs_ana_fields[2];
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+ struct reset_control *xfi_rst;
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struct reset_control_bulk_data rsts[AIROHA_PCS_MAX_NUM_RSTS];
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struct phy *phy;
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