[PATCH v3 0/3] Add iMX91 clock driver support

[PATCH v3 0/3] Add iMX91 clock driver support

[Pengfei Li]

This patch set is to add some new clocks to binding header and driver.

'IMX93_CLK_END' macro was previously defined in imx93-clock.h to
indicate the number of clocks, but it is not part of the ABI, which
contradicts this define when adding new clocks, so it should be
moved to clk driver.

---
Change for v3:
- Add some new clocks to the bindings header.
- Move _CLK_END macro to the clock driver.
- Add iMX91 clock driver
- link to v2: https://lore.kernel.org/all/a07828a4-8040-42cb-8c62-8939cac4d9de@kernel.org/

Pengfei Li (3):
  dt-bindings: clock: Add i.MX91 clock support
  dt-bindings: clock: Add i.MX91 clock definition
  clk: imx: add i.MX91 clk

 .../bindings/clock/imx93-clock.yaml           |  1 +
 drivers/clk/imx/clk-imx93.c                   | 63 ++++++++++++-------
 include/dt-bindings/clock/imx93-clock.h       |  6 +-
 3 files changed, 46 insertions(+), 24 deletions(-)

-- 
2.34.1

[PATCH v3 1/3] dt-bindings: clock: Add i.MX91 clock support

[Pengfei Li]

i.MX91 has similar Clock Control Module(CCM) design as i.MX93.
Add a new compatible string for i.MX91.

Signed-off-by: Pengfei Li <pengfei.li_1@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
---
 Documentation/devicetree/bindings/clock/imx93-clock.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/clock/imx93-clock.yaml b/Documentation/devicetree/bindings/clock/imx93-clock.yaml
index ccb53c6b96c1..98c0800732ef 100644
--- a/Documentation/devicetree/bindings/clock/imx93-clock.yaml
+++ b/Documentation/devicetree/bindings/clock/imx93-clock.yaml
@@ -16,6 +16,7 @@ description: |
 properties:
   compatible:
     enum:
+      - fsl,imx91-ccm
       - fsl,imx93-ccm
 
   reg:
-- 
2.34.1

Re: [PATCH v3 1/3] dt-bindings: clock: Add i.MX91 clock support

[Krzysztof Kozlowski]

On Thu, Oct 10, 2024 at 09:57:34PM -0700, Pengfei Li wrote:
> i.MX91 has similar Clock Control Module(CCM) design as i.MX93.
> Add a new compatible string for i.MX91.
> 
> Signed-off-by: Pengfei Li <pengfei.li_1@nxp.com>
> Reviewed-by: Frank Li <Frank.Li@nxp.com>
> ---
>  Documentation/devicetree/bindings/clock/imx93-clock.yaml | 1 +
>  1 file changed, 1 insertion(+)

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof

Re: [PATCH v3 1/3] dt-bindings: clock: Add i.MX91 clock support

[Rob Herring (Arm)]

On Thu, 10 Oct 2024 21:57:34 -0700, Pengfei Li wrote:
> i.MX91 has similar Clock Control Module(CCM) design as i.MX93.
> Add a new compatible string for i.MX91.
> 
> Signed-off-by: Pengfei Li <pengfei.li_1@nxp.com>
> Reviewed-by: Frank Li <Frank.Li@nxp.com>
> ---
>  Documentation/devicetree/bindings/clock/imx93-clock.yaml | 1 +
>  1 file changed, 1 insertion(+)
> 

Acked-by: Rob Herring (Arm) <robh@kernel.org>

[PATCH v3 2/3] dt-bindings: clock: Add i.MX91 clock definition

[Pengfei Li]

i.MX91 is similar with i.MX93, only add few new clock compared to i.MX93.
Add i.MX91 related clock definition.

Signed-off-by: Pengfei Li <pengfei.li_1@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
---
 include/dt-bindings/clock/imx93-clock.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/include/dt-bindings/clock/imx93-clock.h b/include/dt-bindings/clock/imx93-clock.h
index 787c9e74dc96..6c685067288b 100644
--- a/include/dt-bindings/clock/imx93-clock.h
+++ b/include/dt-bindings/clock/imx93-clock.h
@@ -204,6 +204,10 @@
 #define IMX93_CLK_A55_SEL		199
 #define IMX93_CLK_A55_CORE		200
 #define IMX93_CLK_PDM_IPG		201
-#define IMX93_CLK_END			202
+#define IMX91_CLK_ENET1_QOS_TSN     202
+#define IMX91_CLK_ENET_TIMER        203
+#define IMX91_CLK_ENET2_REGULAR     204
+#define IMX91_CLK_ENET2_REGULAR_GATE		205
+#define IMX91_CLK_ENET1_QOS_TSN_GATE		206
 
 #endif
-- 
2.34.1

Re: [PATCH v3 2/3] dt-bindings: clock: Add i.MX91 clock definition

[Krzysztof Kozlowski]

On Thu, Oct 10, 2024 at 09:57:35PM -0700, Pengfei Li wrote:
> i.MX91 is similar with i.MX93, only add few new clock compared to i.MX93.
> Add i.MX91 related clock definition.
> 
> Signed-off-by: Pengfei Li <pengfei.li_1@nxp.com>
> Reviewed-by: Frank Li <Frank.Li@nxp.com>
> ---
>  include/dt-bindings/clock/imx93-clock.h | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/include/dt-bindings/clock/imx93-clock.h b/include/dt-bindings/clock/imx93-clock.h
> index 787c9e74dc96..6c685067288b 100644
> --- a/include/dt-bindings/clock/imx93-clock.h
> +++ b/include/dt-bindings/clock/imx93-clock.h
> @@ -204,6 +204,10 @@
>  #define IMX93_CLK_A55_SEL		199
>  #define IMX93_CLK_A55_CORE		200
>  #define IMX93_CLK_PDM_IPG		201
> -#define IMX93_CLK_END			202

This is supposed to be separate patch, because you are removing
something from ABI.

If your maintainer NAKed it, then do not sneak it some other way. Sort
the problem with maintainer or entire patchset cannot enter.

Best regards,
Krzysztof

Re: [PATCH v3 2/3] dt-bindings: clock: Add i.MX91 clock definition

[Rob Herring]

On Fri, Oct 11, 2024 at 04:40:35PM +0200, Krzysztof Kozlowski wrote:
> On Thu, Oct 10, 2024 at 09:57:35PM -0700, Pengfei Li wrote:
> > i.MX91 is similar with i.MX93, only add few new clock compared to i.MX93.
> > Add i.MX91 related clock definition.
> > 
> > Signed-off-by: Pengfei Li <pengfei.li_1@nxp.com>
> > Reviewed-by: Frank Li <Frank.Li@nxp.com>
> > ---
> >  include/dt-bindings/clock/imx93-clock.h | 6 +++++-
> >  1 file changed, 5 insertions(+), 1 deletion(-)
> > 
> > diff --git a/include/dt-bindings/clock/imx93-clock.h b/include/dt-bindings/clock/imx93-clock.h
> > index 787c9e74dc96..6c685067288b 100644
> > --- a/include/dt-bindings/clock/imx93-clock.h
> > +++ b/include/dt-bindings/clock/imx93-clock.h
> > @@ -204,6 +204,10 @@
> >  #define IMX93_CLK_A55_SEL		199
> >  #define IMX93_CLK_A55_CORE		200
> >  #define IMX93_CLK_PDM_IPG		201
> > -#define IMX93_CLK_END			202
> 
> This is supposed to be separate patch, because you are removing
> something from ABI.

But "end" defines are not part of the ABI.

> 
> If your maintainer NAKed it, then do not sneak it some other way. Sort
> the problem with maintainer or entire patchset cannot enter.
> 
> Best regards,
> Krzysztof
> 

Re: [PATCH v3 2/3] dt-bindings: clock: Add i.MX91 clock definition

[Rob Herring]

On Thu, Oct 10, 2024 at 09:57:35PM -0700, Pengfei Li wrote:
> i.MX91 is similar with i.MX93, only add few new clock compared to i.MX93.
> Add i.MX91 related clock definition.
> 
> Signed-off-by: Pengfei Li <pengfei.li_1@nxp.com>
> Reviewed-by: Frank Li <Frank.Li@nxp.com>
> ---
>  include/dt-bindings/clock/imx93-clock.h | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)

This belongs with the binding patch.

> 
> diff --git a/include/dt-bindings/clock/imx93-clock.h b/include/dt-bindings/clock/imx93-clock.h
> index 787c9e74dc96..6c685067288b 100644
> --- a/include/dt-bindings/clock/imx93-clock.h
> +++ b/include/dt-bindings/clock/imx93-clock.h
> @@ -204,6 +204,10 @@
>  #define IMX93_CLK_A55_SEL		199
>  #define IMX93_CLK_A55_CORE		200
>  #define IMX93_CLK_PDM_IPG		201
> -#define IMX93_CLK_END			202
> +#define IMX91_CLK_ENET1_QOS_TSN     202
> +#define IMX91_CLK_ENET_TIMER        203
> +#define IMX91_CLK_ENET2_REGULAR     204
> +#define IMX91_CLK_ENET2_REGULAR_GATE		205
> +#define IMX91_CLK_ENET1_QOS_TSN_GATE		206
>  
>  #endif
> -- 
> 2.34.1
> 

[PATCH v3 3/3] clk: imx: add i.MX91 clk

[Pengfei Li]

Add i.MX91 clk driver which reuses the 93 driver and removes
some clks.

Signed-off-by: Pengfei Li <pengfei.li_1@nxp.com>
---
 drivers/clk/imx/clk-imx93.c | 63 +++++++++++++++++++++++--------------
 1 file changed, 40 insertions(+), 23 deletions(-)

diff --git a/drivers/clk/imx/clk-imx93.c b/drivers/clk/imx/clk-imx93.c
index c6a9bc8ecc1f..406c98566271 100644
--- a/drivers/clk/imx/clk-imx93.c
+++ b/drivers/clk/imx/clk-imx93.c
@@ -15,6 +15,11 @@
 
 #include "clk.h"
 
+#define IMX93_CLK_END 207
+
+#define PLAT_IMX93 BIT(0)
+#define PLAT_IMX91 BIT(1)
+
 enum clk_sel {
 	LOW_SPEED_IO_SEL,
 	NON_IO_SEL,
@@ -53,6 +58,7 @@ static const struct imx93_clk_root {
 	u32 off;
 	enum clk_sel sel;
 	unsigned long flags;
+	unsigned long plat;
 } root_array[] = {
 	/* a55/m33/bus critical clk for system run */
 	{ IMX93_CLK_A55_PERIPH,		"a55_periph_root",	0x0000,	FAST_SEL, CLK_IS_CRITICAL },
@@ -63,7 +69,7 @@ static const struct imx93_clk_root {
 	{ IMX93_CLK_BUS_AON,		"bus_aon_root",		0x0300,	LOW_SPEED_IO_SEL, CLK_IS_CRITICAL },
 	{ IMX93_CLK_WAKEUP_AXI,		"wakeup_axi_root",	0x0380,	FAST_SEL, CLK_IS_CRITICAL },
 	{ IMX93_CLK_SWO_TRACE,		"swo_trace_root",	0x0400,	LOW_SPEED_IO_SEL, },
-	{ IMX93_CLK_M33_SYSTICK,	"m33_systick_root",	0x0480,	LOW_SPEED_IO_SEL, },
+	{ IMX93_CLK_M33_SYSTICK,	"m33_systick_root",	0x0480,	LOW_SPEED_IO_SEL, 0, PLAT_IMX93, },
 	{ IMX93_CLK_FLEXIO1,		"flexio1_root",		0x0500,	LOW_SPEED_IO_SEL, },
 	{ IMX93_CLK_FLEXIO2,		"flexio2_root",		0x0580,	LOW_SPEED_IO_SEL, },
 	{ IMX93_CLK_LPTMR1,		"lptmr1_root",		0x0700,	LOW_SPEED_IO_SEL, },
@@ -120,15 +126,15 @@ static const struct imx93_clk_root {
 	{ IMX93_CLK_HSIO_ACSCAN_80M,	"hsio_acscan_80m_root",	0x1f80,	LOW_SPEED_IO_SEL, },
 	{ IMX93_CLK_HSIO_ACSCAN_480M,	"hsio_acscan_480m_root", 0x2000, MISC_SEL, },
 	{ IMX93_CLK_NIC_AXI,		"nic_axi_root",		0x2080, FAST_SEL, CLK_IS_CRITICAL, },
-	{ IMX93_CLK_ML_APB,		"ml_apb_root",		0x2180,	LOW_SPEED_IO_SEL, },
-	{ IMX93_CLK_ML,			"ml_root",		0x2200,	FAST_SEL, },
+	{ IMX93_CLK_ML_APB,		"ml_apb_root",		0x2180,	LOW_SPEED_IO_SEL, 0, PLAT_IMX93, },
+	{ IMX93_CLK_ML,			"ml_root",		0x2200,	FAST_SEL, 0, PLAT_IMX93, },
 	{ IMX93_CLK_MEDIA_AXI,		"media_axi_root",	0x2280,	FAST_SEL, },
 	{ IMX93_CLK_MEDIA_APB,		"media_apb_root",	0x2300,	LOW_SPEED_IO_SEL, },
-	{ IMX93_CLK_MEDIA_LDB,		"media_ldb_root",	0x2380,	VIDEO_SEL, },
+	{ IMX93_CLK_MEDIA_LDB,		"media_ldb_root",	0x2380,	VIDEO_SEL, 0, PLAT_IMX93, },
 	{ IMX93_CLK_MEDIA_DISP_PIX,	"media_disp_pix_root",	0x2400,	VIDEO_SEL, },
 	{ IMX93_CLK_CAM_PIX,		"cam_pix_root",		0x2480,	VIDEO_SEL, },
-	{ IMX93_CLK_MIPI_TEST_BYTE,	"mipi_test_byte_root",	0x2500,	VIDEO_SEL, },
-	{ IMX93_CLK_MIPI_PHY_CFG,	"mipi_phy_cfg_root",	0x2580,	VIDEO_SEL, },
+	{ IMX93_CLK_MIPI_TEST_BYTE,	"mipi_test_byte_root",	0x2500,	VIDEO_SEL, 0, PLAT_IMX93, },
+	{ IMX93_CLK_MIPI_PHY_CFG,	"mipi_phy_cfg_root",	0x2580,	VIDEO_SEL, 0, PLAT_IMX93, },
 	{ IMX93_CLK_ADC,		"adc_root",		0x2700,	LOW_SPEED_IO_SEL, },
 	{ IMX93_CLK_PDM,		"pdm_root",		0x2780,	AUDIO_SEL, },
 	{ IMX93_CLK_TSTMR1,		"tstmr1_root",		0x2800,	LOW_SPEED_IO_SEL, },
@@ -137,13 +143,16 @@ static const struct imx93_clk_root {
 	{ IMX93_CLK_MQS2,		"mqs2_root",		0x2980,	AUDIO_SEL, },
 	{ IMX93_CLK_AUDIO_XCVR,		"audio_xcvr_root",	0x2a00,	NON_IO_SEL, },
 	{ IMX93_CLK_SPDIF,		"spdif_root",		0x2a80,	AUDIO_SEL, },
-	{ IMX93_CLK_ENET,		"enet_root",		0x2b00,	NON_IO_SEL, },
-	{ IMX93_CLK_ENET_TIMER1,	"enet_timer1_root",	0x2b80,	LOW_SPEED_IO_SEL, },
-	{ IMX93_CLK_ENET_TIMER2,	"enet_timer2_root",	0x2c00,	LOW_SPEED_IO_SEL, },
-	{ IMX93_CLK_ENET_REF,		"enet_ref_root",	0x2c80,	NON_IO_SEL, },
-	{ IMX93_CLK_ENET_REF_PHY,	"enet_ref_phy_root",	0x2d00,	LOW_SPEED_IO_SEL, },
-	{ IMX93_CLK_I3C1_SLOW,		"i3c1_slow_root",	0x2d80,	LOW_SPEED_IO_SEL, },
-	{ IMX93_CLK_I3C2_SLOW,		"i3c2_slow_root",	0x2e00,	LOW_SPEED_IO_SEL, },
+	{ IMX93_CLK_ENET,		"enet_root",		0x2b00,	NON_IO_SEL, 0, PLAT_IMX93, },
+	{ IMX93_CLK_ENET_TIMER1,	"enet_timer1_root",	0x2b80,	LOW_SPEED_IO_SEL, 0, PLAT_IMX93, },
+	{ IMX93_CLK_ENET_TIMER2,	"enet_timer2_root",	0x2c00,	LOW_SPEED_IO_SEL, 0, PLAT_IMX93, },
+	{ IMX93_CLK_ENET_REF,		"enet_ref_root",	0x2c80,	NON_IO_SEL, 0, PLAT_IMX93, },
+	{ IMX93_CLK_ENET_REF_PHY,	"enet_ref_phy_root",	0x2d00,	LOW_SPEED_IO_SEL, 0, PLAT_IMX93, },
+	{ IMX91_CLK_ENET1_QOS_TSN, 	"enet1_qos_tsn_root",   0x2b00, NON_IO_SEL, 0, PLAT_IMX91, },
+	{ IMX91_CLK_ENET_TIMER,		"enet_timer_root",      0x2b80, LOW_SPEED_IO_SEL, 0, PLAT_IMX91, },
+	{ IMX91_CLK_ENET2_REGULAR,	"enet2_regular_root",   0x2c80, NON_IO_SEL, 0, PLAT_IMX91, },
+	{ IMX93_CLK_I3C1_SLOW,		"i3c1_slow_root",	0x2d80,	LOW_SPEED_IO_SEL, 0, PLAT_IMX93, },
+	{ IMX93_CLK_I3C2_SLOW,		"i3c2_slow_root",	0x2e00,	LOW_SPEED_IO_SEL, 0, PLAT_IMX93, },
 	{ IMX93_CLK_USB_PHY_BURUNIN,	"usb_phy_root",		0x2e80,	LOW_SPEED_IO_SEL, },
 	{ IMX93_CLK_PAL_CAME_SCAN,	"pal_came_scan_root",	0x2f00,	MISC_SEL, }
 };
@@ -155,6 +164,7 @@ static const struct imx93_clk_ccgr {
 	u32 off;
 	unsigned long flags;
 	u32 *shared_count;
+	unsigned long plat;
 } ccgr_array[] = {
 	{ IMX93_CLK_A55_GATE,		"a55_alt",	"a55_alt_root",		0x8000, },
 	/* M33 critical clk for system run */
@@ -244,8 +254,10 @@ static const struct imx93_clk_ccgr {
 	{ IMX93_CLK_AUD_XCVR_GATE,	"aud_xcvr",	"audio_xcvr_root",	0x9b80, },
 	{ IMX93_CLK_SPDIF_GATE,		"spdif",	"spdif_root",		0x9c00, },
 	{ IMX93_CLK_HSIO_32K_GATE,	"hsio_32k",	"osc_32k",		0x9dc0, },
-	{ IMX93_CLK_ENET1_GATE,		"enet1",	"wakeup_axi_root",	0x9e00, },
-	{ IMX93_CLK_ENET_QOS_GATE,	"enet_qos",	"wakeup_axi_root",	0x9e40, },
+	{ IMX93_CLK_ENET1_GATE,		"enet1",	"wakeup_axi_root",	0x9e00, 0, NULL, PLAT_IMX93, },
+	{ IMX93_CLK_ENET_QOS_GATE,	"enet_qos",	"wakeup_axi_root",	0x9e40, 0, NULL, PLAT_IMX93, },
+	{ IMX91_CLK_ENET2_REGULAR_GATE, "enet2_regular",        "wakeup_axi_root",      0x9e00, 0, NULL, PLAT_IMX91, },
+	{ IMX91_CLK_ENET1_QOS_TSN_GATE,     "enet1_qos_tsn",        "wakeup_axi_root",      0x9e40, 0, NULL, PLAT_IMX91, },
 	/* Critical because clk accessed during CPU idle */
 	{ IMX93_CLK_SYS_CNT_GATE,	"sys_cnt",	"osc_24m",		0x9e80, CLK_IS_CRITICAL},
 	{ IMX93_CLK_TSTMR1_GATE,	"tstmr1",	"bus_aon_root",		0x9ec0, },
@@ -265,6 +277,7 @@ static int imx93_clocks_probe(struct platform_device *pdev)
 	const struct imx93_clk_ccgr *ccgr;
 	void __iomem *base, *anatop_base;
 	int i, ret;
+	const unsigned long plat = (unsigned long)device_get_match_data(&pdev->dev);
 
 	clk_hw_data = devm_kzalloc(dev, struct_size(clk_hw_data, hws,
 					  IMX93_CLK_END), GFP_KERNEL);
@@ -314,17 +327,20 @@ static int imx93_clocks_probe(struct platform_device *pdev)
 
 	for (i = 0; i < ARRAY_SIZE(root_array); i++) {
 		root = &root_array[i];
-		clks[root->clk] = imx93_clk_composite_flags(root->name,
-							    parent_names[root->sel],
-							    4, base + root->off, 3,
-							    root->flags);
+		if (!root->plat || root->plat & plat)
+			clks[root->clk] = imx93_clk_composite_flags(root->name,
+						parent_names[root->sel],
+						4, base + root->off, 3,
+						root->flags);
 	}
 
 	for (i = 0; i < ARRAY_SIZE(ccgr_array); i++) {
 		ccgr = &ccgr_array[i];
-		clks[ccgr->clk] = imx93_clk_gate(NULL, ccgr->name, ccgr->parent_name,
-						 ccgr->flags, base + ccgr->off, 0, 1, 1, 3,
-						 ccgr->shared_count);
+		if (!ccgr->plat || ccgr->plat & plat)
+			clks[ccgr->clk] = imx93_clk_gate(NULL,
+				ccgr->name, ccgr->parent_name,
+				ccgr->flags, base + ccgr->off, 0, 1, 1, 3,
+				ccgr->shared_count);
 	}
 
 	clks[IMX93_CLK_A55_SEL] = imx_clk_hw_mux2("a55_sel", base + 0x4820, 0, 1, a55_core_sels,
@@ -354,7 +370,8 @@ static int imx93_clocks_probe(struct platform_device *pdev)
 }
 
 static const struct of_device_id imx93_clk_of_match[] = {
-	{ .compatible = "fsl,imx93-ccm" },
+	{ .compatible = "fsl,imx93-ccm", .data = (void *)PLAT_IMX93 },
+	{ .compatible = "fsl,imx91-ccm", .data = (void *)PLAT_IMX91 },
 	{ /* Sentinel */ },
 };
 MODULE_DEVICE_TABLE(of, imx93_clk_of_match);
-- 
2.34.1