| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20250902001302.3823418-5-prabhakar.mahadev-lad.rj@bp.renesas.com>
Date: Tue, 2 Sep 2025 01:13:02 +0100
From: Prabhakar <prabhakar.csengg@...il.com>
To: Andrew Lunn <andrew+netdev@...n.ch>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Maxime Coquelin <mcoquelin.stm32@...il.com>,
Alexandre Torgue <alexandre.torgue@...s.st.com>,
Russell King <linux@...linux.org.uk>,
Giuseppe Cavallaro <peppe.cavallaro@...com>,
Jose Abreu <joabreu@...opsys.com>,
Philipp Zabel <p.zabel@...gutronix.de>,
Geert Uytterhoeven <geert+renesas@...der.be>,
Magnus Damm <magnus.damm@...il.com>
Cc: linux-renesas-soc@...r.kernel.org,
netdev@...r.kernel.org,
devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org,
linux-stm32@...md-mailman.stormreply.com,
linux-arm-kernel@...ts.infradead.org,
Prabhakar <prabhakar.csengg@...il.com>,
Biju Das <biju.das.jz@...renesas.com>,
Fabrizio Castro <fabrizio.castro.jz@...esas.com>,
Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: [PATCH net-next 4/4] net: stmmac: dwmac-renesas-gbeth: Add support for RZ/T2H SoC
From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Extend the Renesas GBETH stmmac glue driver to support the RZ/T2H SoC,
where the GMAC is connected through a MIIC PCS. Introduce a new
`has_pcs` flag in `struct renesas_gbeth_of_data` to indicate when PCS
handling is required.
When enabled, the driver parses the `pcs-handle` phandle, creates a PCS
instance with `miic_create()`, and wires it into phylink. Proper cleanup
is done with `miic_destroy()`. New init/exit/select hooks are added to
`plat_stmmacenet_data` for PCS integration.
Update Kconfig to select `PCS_RZN1_MIIC` when building the Renesas GBETH
driver so the PCS support is always available.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
---
drivers/net/ethernet/stmicro/stmmac/Kconfig | 1 +
.../stmicro/stmmac/dwmac-renesas-gbeth.c | 52 +++++++++++++++++++
2 files changed, 53 insertions(+)
diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethernet/stmicro/stmmac/Kconfig
index 67fa879b1e52..a01c83b109f9 100644
--- a/drivers/net/ethernet/stmicro/stmmac/Kconfig
+++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig
@@ -136,6 +136,7 @@ config DWMAC_RENESAS_GBETH
tristate "Renesas RZ/V2H(P) GBETH support"
default ARCH_RENESAS
depends on OF && (ARCH_RENESAS || COMPILE_TEST)
+ select PCS_RZN1_MIIC
help
Support for Gigabit Ethernet Interface (GBETH) on Renesas
RZ/V2H(P) SoCs.
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-renesas-gbeth.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-renesas-gbeth.c
index 022e595a9e1b..ad89f7b8f279 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-renesas-gbeth.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-renesas-gbeth.c
@@ -17,6 +17,7 @@
#include <linux/device.h>
#include <linux/module.h>
#include <linux/of.h>
+#include <linux/pcs-rzn1-miic.h>
#include <linux/platform_device.h>
#include <linux/reset.h>
#include <linux/types.h>
@@ -33,6 +34,7 @@
* handled by the glue driver or core driver.
* @set_clk_tx_rate: Flag to indicate if Tx clock is fixed or
* set_clk_tx_rate is needed.
+ * @has_pcs: Flag to indicate if the MAC has a PCS
*/
struct renesas_gbeth_of_data {
const char * const *clks;
@@ -40,6 +42,7 @@ struct renesas_gbeth_of_data {
u32 stmmac_flags;
bool handle_reset;
bool set_clk_tx_rate;
+ bool has_pcs;
};
struct renesas_gbeth {
@@ -53,6 +56,41 @@ static const char *const renesas_gbeth_clks[] = {
"tx", "tx-180", "rx", "rx-180",
};
+static const char *const renesas_gmac_clks[] = {
+ "tx",
+};
+
+static int renesas_gmac_pcs_init(struct stmmac_priv *priv)
+{
+ struct device_node *np = priv->device->of_node;
+ struct device_node *pcs_node;
+ struct phylink_pcs *pcs;
+
+ pcs_node = of_parse_phandle(np, "pcs-handle", 0);
+ if (pcs_node) {
+ pcs = miic_create(priv->device, pcs_node);
+ of_node_put(pcs_node);
+ if (IS_ERR(pcs))
+ return PTR_ERR(pcs);
+
+ priv->hw->phylink_pcs = pcs;
+ }
+
+ return 0;
+}
+
+static void renesas_gmac_pcs_exit(struct stmmac_priv *priv)
+{
+ if (priv->hw->phylink_pcs)
+ miic_destroy(priv->hw->phylink_pcs);
+}
+
+static struct phylink_pcs *renesas_gmac_select_pcs(struct stmmac_priv *priv,
+ phy_interface_t interface)
+{
+ return priv->hw->phylink_pcs;
+}
+
static int renesas_gbeth_init(struct platform_device *pdev, void *priv)
{
struct plat_stmmacenet_data *plat_dat;
@@ -149,6 +187,11 @@ static int renesas_gbeth_probe(struct platform_device *pdev)
plat_dat->init = renesas_gbeth_init;
plat_dat->exit = renesas_gbeth_exit;
plat_dat->flags |= gbeth->of_data->stmmac_flags;
+ if (of_data->has_pcs) {
+ plat_dat->pcs_init = renesas_gmac_pcs_init;
+ plat_dat->pcs_exit = renesas_gmac_pcs_exit;
+ plat_dat->select_pcs = renesas_gmac_select_pcs;
+ }
return devm_stmmac_pltfr_probe(pdev, plat_dat, &stmmac_res);
}
@@ -163,8 +206,17 @@ static const struct renesas_gbeth_of_data renesas_gbeth_of_data = {
STMMAC_FLAG_SPH_DISABLE,
};
+static const struct renesas_gbeth_of_data renesas_gmac_of_data = {
+ .clks = renesas_gmac_clks,
+ .num_clks = ARRAY_SIZE(renesas_gmac_clks),
+ .stmmac_flags = STMMAC_FLAG_HWTSTAMP_CORRECT_LATENCY |
+ STMMAC_FLAG_EN_TX_LPI_CLK_PHY_CAP,
+ .has_pcs = true,
+};
+
static const struct of_device_id renesas_gbeth_match[] = {
{ .compatible = "renesas,rzv2h-gbeth", .data = &renesas_gbeth_of_data },
+ { .compatible = "renesas,rzt2h-gbeth", .data = &renesas_gmac_of_data },
{ /* Sentinel */ }
};
MODULE_DEVICE_TABLE(of, renesas_gbeth_match);
--
2.51.0
Powered by blists - more mailing lists