linux-kernel - [PATCH v3] clk: vf610: Add support for the Ethernet switch clocks

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Message-Id: <20260127085150.3040586-1-lukma@nabladev.com>
Date: Tue, 27 Jan 2026 09:51:50 +0100
From: Lukasz Majewski <lukma@...ladev.com>
To: Abel Vesa <abelvesa@...nel.org>,
	Peng Fan <peng.fan@....com>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>
Cc: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	linux-clk@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	Lukasz Majewski <lukma@...ladev.com>
Subject: [PATCH v3] clk: vf610: Add support for the Ethernet switch clocks

The vf610 device has built in the MoreThanIP L2 switch. For proper
operation it is required to enable ESW and MAC table lookup clocks.

The MAC table spans from 0x400E_C000 for 0x4000 and it is necessary
to provide clocks for each AIPS1-"slot", which size is 0x1000
(hence four separate entries).

Those can be enabled via clock gating CCM_CCGR10 register (0x4006_B068).

This patch also adds VF610_CLK_ESW and VF610_CLK_ESW_MAC_TAB{0123}
macros definitions for L2 switch.

The VF610_CLK_END has been removed from dt-bindings, as its number had to
be increased when MTIP L2 switch clocks were added, and defined locally
in clk-vf610.c driver.

Signed-off-by: Lukasz Majewski <lukma@...ladev.com>
---
Changes for v2:
- Squash clock DT bindings to this single patch
- Replace VF610_CLK_END with VF610_CLK_ESW_MAC_TAB3 + 1

Changes for v3:
- Re-define VF610_CLK_END and move it to clk-vf610.c file
---
 drivers/clk/imx/clk-vf610.c             | 7 +++++++
 include/dt-bindings/clock/vf610-clock.h | 6 +++++-
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/imx/clk-vf610.c b/drivers/clk/imx/clk-vf610.c
index 41eb38552a9c..84a6f907e213 100644
--- a/drivers/clk/imx/clk-vf610.c
+++ b/drivers/clk/imx/clk-vf610.c
@@ -11,6 +11,8 @@
 
 #include "clk.h"
 
+#define VF610_CLK_END 196
+
 #define CCM_CCR			(ccm_base + 0x00)
 #define CCM_CSR			(ccm_base + 0x04)
 #define CCM_CCSR		(ccm_base + 0x08)
@@ -313,6 +315,11 @@ static void __init vf610_clocks_init(struct device_node *ccm_node)
 	clk[VF610_CLK_ENET_TS] = imx_clk_gate("enet_ts", "enet_ts_sel", CCM_CSCDR1, 23);
 	clk[VF610_CLK_ENET0] = imx_clk_gate2("enet0", "ipg_bus", CCM_CCGR9, CCM_CCGRx_CGn(0));
 	clk[VF610_CLK_ENET1] = imx_clk_gate2("enet1", "ipg_bus", CCM_CCGR9, CCM_CCGRx_CGn(1));
+	clk[VF610_CLK_ESW] = imx_clk_gate2("esw", "ipg_bus", CCM_CCGR10, CCM_CCGRx_CGn(8));
+	clk[VF610_CLK_ESW_MAC_TAB0] = imx_clk_gate2("esw_tab0", "ipg_bus", CCM_CCGR10, CCM_CCGRx_CGn(12));
+	clk[VF610_CLK_ESW_MAC_TAB1] = imx_clk_gate2("esw_tab1", "ipg_bus", CCM_CCGR10, CCM_CCGRx_CGn(13));
+	clk[VF610_CLK_ESW_MAC_TAB2] = imx_clk_gate2("esw_tab2", "ipg_bus", CCM_CCGR10, CCM_CCGRx_CGn(14));
+	clk[VF610_CLK_ESW_MAC_TAB3] = imx_clk_gate2("esw_tab3", "ipg_bus", CCM_CCGR10, CCM_CCGRx_CGn(15));
 
 	clk[VF610_CLK_PIT] = imx_clk_gate2("pit", "ipg_bus", CCM_CCGR1, CCM_CCGRx_CGn(7));
 
diff --git a/include/dt-bindings/clock/vf610-clock.h b/include/dt-bindings/clock/vf610-clock.h
index 373644e46747..5d94bd561a2e 100644
--- a/include/dt-bindings/clock/vf610-clock.h
+++ b/include/dt-bindings/clock/vf610-clock.h
@@ -197,6 +197,10 @@
 #define VF610_CLK_TCON1			188
 #define VF610_CLK_CAAM			189
 #define VF610_CLK_CRC			190
-#define VF610_CLK_END			191
+#define VF610_CLK_ESW			191
+#define VF610_CLK_ESW_MAC_TAB0		192
+#define VF610_CLK_ESW_MAC_TAB1		193
+#define VF610_CLK_ESW_MAC_TAB2		194
+#define VF610_CLK_ESW_MAC_TAB3		195
 
 #endif /* __DT_BINDINGS_CLOCK_VF610_H */
-- 
2.39.5