[PATCH 0/4] soc: amlogic: clk-measure: add A1 and T7 support

[PATCH 0/4] soc: amlogic: clk-measure: add A1 and T7 support

[Jian Hu]

This series adds Amlogic clock measurement support for A1 and T7 SoCs,
including binding updates, driver additions, and device tree enablement.

Jian Hu (4):
  dt-bindings: soc: amlogic: clk-measure: Add A1 and T7 compatible
  soc: amlogic: clk-measure: Add A1 and T7 support
  arm64: dts: meson: a1: Add clk measure support
  arm64: dts: amlogic: t7: Add clk measure support

 .../amlogic/amlogic,meson-gx-clk-measure.yaml |   2 +
 arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi   |   5 +
 arch/arm64/boot/dts/amlogic/meson-a1.dtsi     |   5 +
 drivers/soc/amlogic/meson-clk-measure.c       | 272 ++++++++++++++++++
 4 files changed, 284 insertions(+)

-- 
2.47.1

[PATCH 1/4] dt-bindings: soc: amlogic: clk-measure: Add A1 and T7 compatible

[Jian Hu]

Add the Amlogic A1 and T7 compatible for the clk-measurer IP.

Signed-off-by: Jian Hu <jian.hu@amlogic.com>
---
 .../bindings/soc/amlogic/amlogic,meson-gx-clk-measure.yaml      | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/soc/amlogic/amlogic,meson-gx-clk-measure.yaml b/Documentation/devicetree/bindings/soc/amlogic/amlogic,meson-gx-clk-measure.yaml
index 39d4637c2d08..b1200e6940ac 100644
--- a/Documentation/devicetree/bindings/soc/amlogic/amlogic,meson-gx-clk-measure.yaml
+++ b/Documentation/devicetree/bindings/soc/amlogic/amlogic,meson-gx-clk-measure.yaml
@@ -24,6 +24,8 @@ properties:
       - amlogic,meson-sm1-clk-measure
       - amlogic,c3-clk-measure
       - amlogic,s4-clk-measure
+      - amlogic,a1-clk-measure
+      - amlogic,t7-clk-measure
 
   reg:
     maxItems: 1
-- 
2.47.1

[PATCH 2/4] soc: amlogic: clk-measure: Add A1 and T7 support

[Jian Hu]

Add support for the A1 and T7 SoC family in amlogic clk measure.

Signed-off-by: Jian Hu <jian.hu@amlogic.com>
---
 drivers/soc/amlogic/meson-clk-measure.c | 272 ++++++++++++++++++++++++
 1 file changed, 272 insertions(+)

diff --git a/drivers/soc/amlogic/meson-clk-measure.c b/drivers/soc/amlogic/meson-clk-measure.c
index d862e30a244e..083524671b76 100644
--- a/drivers/soc/amlogic/meson-clk-measure.c
+++ b/drivers/soc/amlogic/meson-clk-measure.c
@@ -787,6 +787,258 @@ static const struct meson_msr_id clk_msr_s4[] = {
 
 };
 
+static struct meson_msr_id clk_msr_a1[] = {
+	CLK_MSR_ID(0, "tdmout_b_sclk"),
+	CLK_MSR_ID(1, "tdmout_a_sclk"),
+	CLK_MSR_ID(2, "tdmin_lb_sclk"),
+	CLK_MSR_ID(3, "tdmin_b_sclk"),
+	CLK_MSR_ID(4, "tdmin_a_sclk"),
+	CLK_MSR_ID(5, "vad"),
+	CLK_MSR_ID(6, "resamplea"),
+	CLK_MSR_ID(7, "pdm_sysclk"),
+	CLK_MSR_ID(8, "pdm_dclk"),
+	CLK_MSR_ID(9, "locker_out"),
+	CLK_MSR_ID(10, "locker_in"),
+	CLK_MSR_ID(11, "spdifin"),
+	CLK_MSR_ID(12, "tdmin_vad"),
+	CLK_MSR_ID(13, "au_adc"),
+	CLK_MSR_ID(14, "au_dac"),
+	CLK_MSR_ID(16, "spicc_a"),
+	CLK_MSR_ID(17, "spifc"),
+	CLK_MSR_ID(18, "sd_emmc_a"),
+	CLK_MSR_ID(19, "dmcx4"),
+	CLK_MSR_ID(20, "dmc"),
+	CLK_MSR_ID(21, "psram"),
+	CLK_MSR_ID(22, "cecb"),
+	CLK_MSR_ID(23, "ceca"),
+	CLK_MSR_ID(24, "ts"),
+	CLK_MSR_ID(25, "pwm_f"),
+	CLK_MSR_ID(26, "pwm_e"),
+	CLK_MSR_ID(27, "pwm_d"),
+	CLK_MSR_ID(28, "pwm_c"),
+	CLK_MSR_ID(29, "pwm_b"),
+	CLK_MSR_ID(30, "pwm_a"),
+	CLK_MSR_ID(31, "saradc"),
+	CLK_MSR_ID(32, "usb_bus"),
+	CLK_MSR_ID(33, "dsp_b"),
+	CLK_MSR_ID(34, "dsp_a"),
+	CLK_MSR_ID(35, "axi"),
+	CLK_MSR_ID(36, "sys"),
+	CLK_MSR_ID(40, "rng_ring_osc0"),
+	CLK_MSR_ID(41, "rng_ring_osc1"),
+	CLK_MSR_ID(42, "rng_ring_osc2"),
+	CLK_MSR_ID(43, "rng_ring_osc3"),
+	CLK_MSR_ID(44, "dds_out"),
+	CLK_MSR_ID(45, "cpu_clk_div16"),
+	CLK_MSR_ID(46, "gpio_msr"),
+	CLK_MSR_ID(50, "osc_ring_cpu0"),
+	CLK_MSR_ID(51, "osc_ring_cpu1"),
+	CLK_MSR_ID(54, "osc_ring_top0"),
+	CLK_MSR_ID(55, "osc_ring_top1"),
+	CLK_MSR_ID(56, "osc_ring_ddr"),
+	CLK_MSR_ID(57, "osc_ring_dmc"),
+	CLK_MSR_ID(58, "osc_ring_dspa"),
+	CLK_MSR_ID(59, "osc_ring_dspb"),
+	CLK_MSR_ID(60, "osc_ring_rama"),
+	CLK_MSR_ID(61, "osc_ring_ramb"),
+};
+
+static struct meson_msr_id clk_msr_t7[] = {
+	CLK_MSR_ID(0, "sys"),
+	CLK_MSR_ID(1, "axi"),
+	CLK_MSR_ID(2, "rtc"),
+	CLK_MSR_ID(3, "dspa"),
+	CLK_MSR_ID(4, "dspb"),
+	CLK_MSR_ID(5, "mali"),
+	CLK_MSR_ID(6, "sys_cpu_clk_div16"),
+	CLK_MSR_ID(7, "ceca"),
+	CLK_MSR_ID(8, "cecb"),
+	CLK_MSR_ID(10, "fclk_div5"),
+	CLK_MSR_ID(11, "mpll0"),
+	CLK_MSR_ID(12, "mpll1"),
+	CLK_MSR_ID(13, "mpll2"),
+	CLK_MSR_ID(14, "mpll3"),
+	CLK_MSR_ID(15, "mpll_50m"),
+	CLK_MSR_ID(16, "pcie_inp"),
+	CLK_MSR_ID(17, "pcie_inn"),
+	CLK_MSR_ID(18, "mpll_test_out"),
+	CLK_MSR_ID(19, "hifi_pll"),
+	CLK_MSR_ID(20, "gp0_pll"),
+	CLK_MSR_ID(21, "gp1_pll"),
+	CLK_MSR_ID(22, "eth_mppll_50m"),
+	CLK_MSR_ID(23, "sys_pll_div16"),
+	CLK_MSR_ID(24, "ddr_dpll_pt"),
+	CLK_MSR_ID(25, "earcrx_pll"),
+	CLK_MSR_ID(26, "paie1_clk_inp"),
+	CLK_MSR_ID(27, "paie1_clk_inn"),
+	CLK_MSR_ID(28, "amlgdc"),
+	CLK_MSR_ID(29, "gdc"),
+	CLK_MSR_ID(30, "mod_eth_phy_ref"),
+	CLK_MSR_ID(31, "mod_eth_tx"),
+	CLK_MSR_ID(32, "eth_clk125Mhz"),
+	CLK_MSR_ID(33, "eth_clk_rmii"),
+	CLK_MSR_ID(34, "co_clkin_to_mac"),
+	CLK_MSR_ID(35, "mod_eth_rx_clk_rmii"),
+	CLK_MSR_ID(36, "co_rx"),
+	CLK_MSR_ID(37, "co_tx"),
+	CLK_MSR_ID(38, "eth_phy_rxclk"),
+	CLK_MSR_ID(39, "eth_phy_plltxclk"),
+	CLK_MSR_ID(40, "ephy_test"),
+	CLK_MSR_ID(41, "dsi_b_meas"),
+	CLK_MSR_ID(42, "hdmirx_apl"),
+	CLK_MSR_ID(43, "hdmirx_tmds"),
+	CLK_MSR_ID(44, "hdmirx_cable"),
+	CLK_MSR_ID(45, "hdmirx_apll_clk_audio"),
+	CLK_MSR_ID(46, "hdmirx_5m"),
+	CLK_MSR_ID(47, "hdmirx_2m"),
+	CLK_MSR_ID(48, "hdmirx_cfg"),
+	CLK_MSR_ID(49, "hdmirx_hdcp2x_eclk"),
+	CLK_MSR_ID(50, "vid_pll0_div"),
+	CLK_MSR_ID(51, "hdmi_vid_pll"),
+	CLK_MSR_ID(54, "vdac_clk"),
+	CLK_MSR_ID(55, "vpu_clk_buf"),
+	CLK_MSR_ID(56, "mod_tcon_clko"),
+	CLK_MSR_ID(57, "lcd_an_clk_ph2"),
+	CLK_MSR_ID(58, "lcd_an_clk_ph3"),
+	CLK_MSR_ID(59, "hdmi_tx_pixel"),
+	CLK_MSR_ID(60, "vdin_meas"),
+	CLK_MSR_ID(61, "vpu_clk"),
+	CLK_MSR_ID(62, "vpu_clkb"),
+	CLK_MSR_ID(63, "vpu_clkb_tmp"),
+	CLK_MSR_ID(64, "vpu_clkc"),
+	CLK_MSR_ID(65, "vid_lock"),
+	CLK_MSR_ID(66, "vapbclk"),
+	CLK_MSR_ID(67, "ge2d"),
+	CLK_MSR_ID(68, "aud_pll"),
+	CLK_MSR_ID(69, "aud_sck"),
+	CLK_MSR_ID(70, "dsi_a_meas"),
+	CLK_MSR_ID(72, "mipi_csi_phy"),
+	CLK_MSR_ID(73, "mipi_isp"),
+	CLK_MSR_ID(76, "hdmitx_tmds"),
+	CLK_MSR_ID(77, "hdmitx_sys"),
+	CLK_MSR_ID(78, "hdmitx_fe"),
+	CLK_MSR_ID(80, "hdmitx_prif"),
+	CLK_MSR_ID(81, "hdmitx_200m"),
+	CLK_MSR_ID(82, "hdmitx_aud"),
+	CLK_MSR_ID(83, "hdmitx_pnx"),
+	CLK_MSR_ID(84, "spicc5"),
+	CLK_MSR_ID(85, "spicc4"),
+	CLK_MSR_ID(86, "spicc3"),
+	CLK_MSR_ID(87, "spicc2"),
+	CLK_MSR_ID(93, "vdec"),
+	CLK_MSR_ID(94, "wave521_aclk"),
+	CLK_MSR_ID(95, "wave521_cclk"),
+	CLK_MSR_ID(96, "wave521_bclk"),
+	CLK_MSR_ID(97, "hcodec"),
+	CLK_MSR_ID(98, "hevcb"),
+	CLK_MSR_ID(99, "hevcf"),
+	CLK_MSR_ID(100, "hdmi_aud_pll"),
+	CLK_MSR_ID(101, "hdmi_acr_ref"),
+	CLK_MSR_ID(102, "hdmi_meter"),
+	CLK_MSR_ID(103, "hdmi_vid"),
+	CLK_MSR_ID(104, "hdmi_aud"),
+	CLK_MSR_ID(105, "hdmi_dsd"),
+	CLK_MSR_ID(108, "dsi1_phy"),
+	CLK_MSR_ID(109, "dsi0_phy"),
+	CLK_MSR_ID(110, "smartcard"),
+	CLK_MSR_ID(111, "sar_adc"),
+	CLK_MSR_ID(113, "sd_emmc_c"),
+	CLK_MSR_ID(114, "sd_emmc_b"),
+	CLK_MSR_ID(115, "sd_emmc_a"),
+	CLK_MSR_ID(116, "gpio_msr"),
+	CLK_MSR_ID(117, "spicc1"),
+	CLK_MSR_ID(118, "spicc0"),
+	CLK_MSR_ID(119, "anakin"),
+	CLK_MSR_ID(121, "ts_clk(temp sensor)"),
+	CLK_MSR_ID(122, "ts_a73"),
+	CLK_MSR_ID(123, "ts_a53"),
+	CLK_MSR_ID(124, "ts_nna"),
+	CLK_MSR_ID(130, "audio_vad"),
+	CLK_MSR_ID(131, "acodec_dac_clk_x128"),
+	CLK_MSR_ID(132, "audio_locker_in"),
+	CLK_MSR_ID(133, "audio_locker_out"),
+	CLK_MSR_ID(134, "audio_tdmout_c_sclk"),
+	CLK_MSR_ID(135, "audio_tdmout_b_sclk"),
+	CLK_MSR_ID(136, "audio_tdmout_a_sclk"),
+	CLK_MSR_ID(137, "audio_tdmin_lb_sclk"),
+	CLK_MSR_ID(138, "audio_tdmin_c_sclk"),
+	CLK_MSR_ID(139, "audio_tdmin_b_sclk"),
+	CLK_MSR_ID(140, "audio_tdmin_a_sclk"),
+	CLK_MSR_ID(141, "audio_resamplea"),
+	CLK_MSR_ID(142, "audio_pdm_sysclk"),
+	CLK_MSR_ID(143, "audio_spdifoutb_mst"),
+	CLK_MSR_ID(144, "audio_spdifout_mst"),
+	CLK_MSR_ID(145, "audio_spdifin_mst"),
+	CLK_MSR_ID(146, "audio_pdm_dclk"),
+	CLK_MSR_ID(147, "audio_resampleb"),
+	CLK_MSR_ID(148, "earcrx_pll_dmac"),
+	CLK_MSR_ID(156, "pwm_ao_h"),
+	CLK_MSR_ID(157, "pwm_ao_g"),
+	CLK_MSR_ID(158, "pwm_ao_f"),
+	CLK_MSR_ID(159, "pwm_ao_e"),
+	CLK_MSR_ID(160, "pwm_ao_d"),
+	CLK_MSR_ID(161, "pwm_ao_c"),
+	CLK_MSR_ID(162, "pwm_ao_b"),
+	CLK_MSR_ID(163, "pwm_ao_a"),
+	CLK_MSR_ID(164, "pwm_f"),
+	CLK_MSR_ID(165, "pwm_e"),
+	CLK_MSR_ID(166, "pwm_d"),
+	CLK_MSR_ID(167, "pwm_c"),
+	CLK_MSR_ID(168, "pwm_b"),
+	CLK_MSR_ID(169, "pwm_a"),
+	CLK_MSR_ID(170, "aclkm"),
+	CLK_MSR_ID(171, "mclk_pll"),
+	CLK_MSR_ID(172, "a73_sys_pll_div16"),
+	CLK_MSR_ID(173, "a73_cpu_clk_div16"),
+	CLK_MSR_ID(176, "rng_ring_0"),
+	CLK_MSR_ID(177, "rng_ring_1"),
+	CLK_MSR_ID(178, "rng_ring_2"),
+	CLK_MSR_ID(179, "rng_ring_3"),
+	CLK_MSR_ID(180, "am_ring_out0"),
+	CLK_MSR_ID(181, "am_ring_out1"),
+	CLK_MSR_ID(182, "am_ring_out2"),
+	CLK_MSR_ID(183, "am_ring_out3"),
+	CLK_MSR_ID(184, "am_ring_out4"),
+	CLK_MSR_ID(185, "am_ring_out5"),
+	CLK_MSR_ID(186, "am_ring_out6"),
+	CLK_MSR_ID(187, "am_ring_out7"),
+	CLK_MSR_ID(188, "am_ring_out8"),
+	CLK_MSR_ID(189, "am_ring_out9"),
+	CLK_MSR_ID(190, "am_ring_out10"),
+	CLK_MSR_ID(191, "am_ring_out11"),
+	CLK_MSR_ID(192, "am_ring_out12"),
+	CLK_MSR_ID(193, "am_ring_out13"),
+	CLK_MSR_ID(194, "am_ring_out14"),
+	CLK_MSR_ID(195, "am_ring_out15"),
+	CLK_MSR_ID(196, "am_ring_out16"),
+	CLK_MSR_ID(197, "am_ring_out17"),
+	CLK_MSR_ID(198, "am_ring_out18"),
+	CLK_MSR_ID(199, "am_ring_out19"),
+	CLK_MSR_ID(200, "mipi_csi_phy0"),
+	CLK_MSR_ID(201, "mipi_csi_phy1"),
+	CLK_MSR_ID(202, "mipi_csi_phy2"),
+	CLK_MSR_ID(203, "mipi_csi_phy3"),
+	CLK_MSR_ID(204, "vid_pll1_div"),
+	CLK_MSR_ID(205, "vid_pll2_div"),
+	CLK_MSR_ID(206, "am_ring_out20"),
+	CLK_MSR_ID(207, "am_ring_out21"),
+	CLK_MSR_ID(208, "am_ring_out22"),
+	CLK_MSR_ID(209, "am_ring_out23"),
+	CLK_MSR_ID(210, "am_ring_out24"),
+	CLK_MSR_ID(211, "am_ring_out25"),
+	CLK_MSR_ID(212, "am_ring_out26"),
+	CLK_MSR_ID(213, "am_ring_out27"),
+	CLK_MSR_ID(214, "am_ring_out28"),
+	CLK_MSR_ID(215, "am_ring_out29"),
+	CLK_MSR_ID(216, "am_ring_out30"),
+	CLK_MSR_ID(217, "am_ring_out31"),
+	CLK_MSR_ID(218, "am_ring_out32"),
+	CLK_MSR_ID(219, "enc0_if"),
+	CLK_MSR_ID(220, "enc2"),
+	CLK_MSR_ID(221, "enc1"),
+	CLK_MSR_ID(222, "enc0")
+};
+
 static int meson_measure_id(struct meson_msr_id *clk_msr_id,
 			    unsigned int duration)
 {
@@ -1026,6 +1278,18 @@ static const struct meson_msr_data clk_msr_s4_data = {
 	.reg = &msr_reg_offset_v2,
 };
 
+static const struct meson_msr_data clk_msr_a1_data = {
+	.msr_table = (void *)clk_msr_a1,
+	.msr_count = ARRAY_SIZE(clk_msr_a1),
+	.reg = &msr_reg_offset_v2,
+};
+
+static const struct meson_msr_data clk_msr_t7_data = {
+	.msr_table = (void *)clk_msr_t7,
+	.msr_count = ARRAY_SIZE(clk_msr_t7),
+	.reg = &msr_reg_offset_v2,
+};
+
 static const struct of_device_id meson_msr_match_table[] = {
 	{
 		.compatible = "amlogic,meson-gx-clk-measure",
@@ -1059,6 +1323,14 @@ static const struct of_device_id meson_msr_match_table[] = {
 		.compatible = "amlogic,s4-clk-measure",
 		.data = &clk_msr_s4_data,
 	},
+	{
+		.compatible = "amlogic,a1-clk-measure",
+		.data = &clk_msr_a1_data,
+	},
+	{
+		.compatible = "amlogic,t7-clk-measure",
+		.data = &clk_msr_t7_data,
+	},
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, meson_msr_match_table);
-- 
2.47.1

Re: [PATCH 2/4] soc: amlogic: clk-measure: Add A1 and T7 support

[Krzysztof Kozlowski]

On 10/04/2026 12:03, Jian Hu wrote:
> Add support for the A1 and T7 SoC family in amlogic clk measure.
> 
> Signed-off-by: Jian Hu <jian.hu@amlogic.com>
> ---
>  drivers/soc/amlogic/meson-clk-measure.c | 272 ++++++++++++++++++++++++
>  1 file changed, 272 insertions(+)
> 
> diff --git a/drivers/soc/amlogic/meson-clk-measure.c b/drivers/soc/amlogic/meson-clk-measure.c
> index d862e30a244e..083524671b76 100644
> --- a/drivers/soc/amlogic/meson-clk-measure.c
> +++ b/drivers/soc/amlogic/meson-clk-measure.c
> @@ -787,6 +787,258 @@ static const struct meson_msr_id clk_msr_s4[] = {
>  
>  };
>  
> +static struct meson_msr_id clk_msr_a1[] = {

And existing code uses what sort of array? Seems you send us obsolete or
downstream code.

Best regards,
Krzysztof

Re: [PATCH 2/4] soc: amlogic: clk-measure: Add A1 and T7 support

[Jian Hu]

On 4/12/2026 5:55 PM, Krzysztof Kozlowski wrote:
> [ EXTERNAL EMAIL ]
>
> On 10/04/2026 12:03, Jian Hu wrote:
>> Add support for the A1 and T7 SoC family in amlogic clk measure.
>>
>> Signed-off-by: Jian Hu <jian.hu@amlogic.com>
>> ---
>>   drivers/soc/amlogic/meson-clk-measure.c | 272 ++++++++++++++++++++++++
>>   1 file changed, 272 insertions(+)
>>
>> diff --git a/drivers/soc/amlogic/meson-clk-measure.c b/drivers/soc/amlogic/meson-clk-measure.c
>> index d862e30a244e..083524671b76 100644
>> --- a/drivers/soc/amlogic/meson-clk-measure.c
>> +++ b/drivers/soc/amlogic/meson-clk-measure.c
>> @@ -787,6 +787,258 @@ static const struct meson_msr_id clk_msr_s4[] = {
>>
>>   };
>>
>> +static struct meson_msr_id clk_msr_a1[] = {
> And existing code uses what sort of array? Seems you send us obsolete or
> downstream code.


Thanks for your review.


I have checked the previous Amlogic SoC's commits. Such as Amlogic AXG, 
G12A, C3, S4.

The clk_msr_xx entry is added after last SoC's array, sorted by 
submissin date rather than alphabetical order.

So I place A1 and T7 after S4 accordingly.


The A1 clock controller driver was already supported in 
https://lore.kernel.org/all/20230523135351.19133-7-ddrokosov@sberdevices.ru/

It is also present in the mainline kernel: 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/clk/meson/Kconfig#n113


This clock measure IP is used to measure the internal clock paths 
frequencies,  and A1 clock controller driver was supported.

Since the corresponding clock measure driver does not support A1 yet, So 
add A1 clk msr here.


>
> Best regards,
> Krzysztof

Re: [PATCH 2/4] soc: amlogic: clk-measure: Add A1 and T7 support

[Krzysztof Kozlowski]

On 13/04/2026 10:21, Jian Hu wrote:
> 
> On 4/12/2026 5:55 PM, Krzysztof Kozlowski wrote:
>> [ EXTERNAL EMAIL ]
>>
>> On 10/04/2026 12:03, Jian Hu wrote:
>>> Add support for the A1 and T7 SoC family in amlogic clk measure.
>>>
>>> Signed-off-by: Jian Hu <jian.hu@amlogic.com>
>>> ---
>>>   drivers/soc/amlogic/meson-clk-measure.c | 272 ++++++++++++++++++++++++
>>>   1 file changed, 272 insertions(+)
>>>
>>> diff --git a/drivers/soc/amlogic/meson-clk-measure.c b/drivers/soc/amlogic/meson-clk-measure.c
>>> index d862e30a244e..083524671b76 100644
>>> --- a/drivers/soc/amlogic/meson-clk-measure.c
>>> +++ b/drivers/soc/amlogic/meson-clk-measure.c
>>> @@ -787,6 +787,258 @@ static const struct meson_msr_id clk_msr_s4[] = {
>>>
>>>   };
>>>
>>> +static struct meson_msr_id clk_msr_a1[] = {
>> And existing code uses what sort of array? Seems you send us obsolete or
>> downstream code.
> 
> 
> Thanks for your review.
> 
> 
> I have checked the previous Amlogic SoC's commits. Such as Amlogic AXG, 
> G12A, C3, S4.
> 
> The clk_msr_xx entry is added after last SoC's array, sorted by 
> submissin date rather than alphabetical order.
> 
> So I place A1 and T7 after S4 accordingly.
> 
> 
> The A1 clock controller driver was already supported in 
> https://lore.kernel.org/all/20230523135351.19133-7-ddrokosov@sberdevices.ru/
> 
> It is also present in the mainline kernel: 
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/clk/meson/Kconfig#n113
> 
> 
> This clock measure IP is used to measure the internal clock paths 
> frequencies,  and A1 clock controller driver was supported.
> 
> Since the corresponding clock measure driver does not support A1 yet, So 
> add A1 clk msr here.

No, what qualifiers or keywords are used for existing arrays? IOW,
please investigate and understand why you are doing this very different
than existing code. Maybe because you sent us downstream, so you
replicated all other downstream issues.

Best regards,
Krzysztof

Re: [PATCH 2/4] soc: amlogic: clk-measure: Add A1 and T7 support

[Neil Armstrong]

On 4/13/26 11:10, Krzysztof Kozlowski wrote:
> On 13/04/2026 10:21, Jian Hu wrote:
>>
>> On 4/12/2026 5:55 PM, Krzysztof Kozlowski wrote:
>>> [ EXTERNAL EMAIL ]
>>>
>>> On 10/04/2026 12:03, Jian Hu wrote:
>>>> Add support for the A1 and T7 SoC family in amlogic clk measure.
>>>>
>>>> Signed-off-by: Jian Hu <jian.hu@amlogic.com>
>>>> ---
>>>>    drivers/soc/amlogic/meson-clk-measure.c | 272 ++++++++++++++++++++++++
>>>>    1 file changed, 272 insertions(+)
>>>>
>>>> diff --git a/drivers/soc/amlogic/meson-clk-measure.c b/drivers/soc/amlogic/meson-clk-measure.c
>>>> index d862e30a244e..083524671b76 100644
>>>> --- a/drivers/soc/amlogic/meson-clk-measure.c
>>>> +++ b/drivers/soc/amlogic/meson-clk-measure.c
>>>> @@ -787,6 +787,258 @@ static const struct meson_msr_id clk_msr_s4[] = {
>>>>
>>>>    };
>>>>
>>>> +static struct meson_msr_id clk_msr_a1[] = {
>>> And existing code uses what sort of array? Seems you send us obsolete or
>>> downstream code.
>>
>>
>> Thanks for your review.
>>
>>
>> I have checked the previous Amlogic SoC's commits. Such as Amlogic AXG,
>> G12A, C3, S4.
>>
>> The clk_msr_xx entry is added after last SoC's array, sorted by
>> submissin date rather than alphabetical order.
>>
>> So I place A1 and T7 after S4 accordingly.
>>
>>
>> The A1 clock controller driver was already supported in
>> https://lore.kernel.org/all/20230523135351.19133-7-ddrokosov@sberdevices.ru/
>>
>> It is also present in the mainline kernel:
>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/clk/meson/Kconfig#n113
>>
>>
>> This clock measure IP is used to measure the internal clock paths
>> frequencies,  and A1 clock controller driver was supported.
>>
>> Since the corresponding clock measure driver does not support A1 yet, So
>> add A1 clk msr here.
> 
> No, what qualifiers or keywords are used for existing arrays? IOW,
> please investigate and understand why you are doing this very different
> than existing code. Maybe because you sent us downstream, so you
> replicated all other downstream issues.

I see, the existing uses "static const struct".

Jian, could to switch to that please ?

Neil

> 
> Best regards,
> Krzysztof

Re: [PATCH 2/4] soc: amlogic: clk-measure: Add A1 and T7 support

[Jian Hu]

On 4/13/2026 5:24 PM, Neil Armstrong wrote:
> [ EXTERNAL EMAIL ]
>
> On 4/13/26 11:10, Krzysztof Kozlowski wrote:
>> On 13/04/2026 10:21, Jian Hu wrote:
>>>
>>> On 4/12/2026 5:55 PM, Krzysztof Kozlowski wrote:
>>>> [ EXTERNAL EMAIL ]
>>>>
>>>> On 10/04/2026 12:03, Jian Hu wrote:
>>>>> Add support for the A1 and T7 SoC family in amlogic clk measure.
>>>>>
>>>>> Signed-off-by: Jian Hu <jian.hu@amlogic.com>
>>>>> ---
>>>>>    drivers/soc/amlogic/meson-clk-measure.c | 272 
>>>>> ++++++++++++++++++++++++
>>>>>    1 file changed, 272 insertions(+)
>>>>>
>>>>> diff --git a/drivers/soc/amlogic/meson-clk-measure.c 
>>>>> b/drivers/soc/amlogic/meson-clk-measure.c
>>>>> index d862e30a244e..083524671b76 100644
>>>>> --- a/drivers/soc/amlogic/meson-clk-measure.c
>>>>> +++ b/drivers/soc/amlogic/meson-clk-measure.c
>>>>> @@ -787,6 +787,258 @@ static const struct meson_msr_id 
>>>>> clk_msr_s4[] = {
>>>>>
>>>>>    };
>>>>>
>>>>> +static struct meson_msr_id clk_msr_a1[] = {
>>>> And existing code uses what sort of array? Seems you send us 
>>>> obsolete or
>>>> downstream code.
>>>
>>>
>>> Thanks for your review.
>>>
>>>
>>> I have checked the previous Amlogic SoC's commits. Such as Amlogic AXG,
>>> G12A, C3, S4.
>>>
>>> The clk_msr_xx entry is added after last SoC's array, sorted by
>>> submissin date rather than alphabetical order.
>>>
>>> So I place A1 and T7 after S4 accordingly.
>>>
>>>
>>> The A1 clock controller driver was already supported in
>>> https://lore.kernel.org/all/20230523135351.19133-7-ddrokosov@sberdevices.ru/ 
>>>
>>>
>>> It is also present in the mainline kernel:
>>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/clk/meson/Kconfig#n113 
>>>
>>>
>>>
>>> This clock measure IP is used to measure the internal clock paths
>>> frequencies,  and A1 clock controller driver was supported.
>>>
>>> Since the corresponding clock measure driver does not support A1 
>>> yet, So
>>> add A1 clk msr here.
>>
>> No, what qualifiers or keywords are used for existing arrays? IOW,
>> please investigate and understand why you are doing this very different
>> than existing code. Maybe because you sent us downstream, so you
>> replicated all other downstream issues.
>
> I see, the existing uses "static const struct".
>
> Jian, could to switch to that please ?
>
> Neil
>
>>
>> Best regards,
>> Krzysztof


Hi, Krysztof & neil


Got it. Thank you pointing out the missing "const".  I mistakenly 
thought it was an alphabetical order issue.

I will fix it in the next verion.


Best regards,

Jian

[PATCH 3/4] arm64: dts: meson: a1: Add clk measure support

[Jian Hu]

Add the clock measure device to the A1 SoC family.

Signed-off-by: Jian Hu <jian.hu@amlogic.com>
---
 arch/arm64/boot/dts/amlogic/meson-a1.dtsi | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-a1.dtsi b/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
index 348411411f3d..6f6a6145cba1 100644
--- a/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
@@ -576,6 +576,11 @@ saradc: adc@2c00 {
 				status = "disabled";
 			};
 
+			clock-measurer@3400 {
+				compatible = "amlogic,a1-clk-measure";
+				reg = <0x0 0x3400 0x0 0x1c>;
+			};
+
 			i2c1: i2c@5c00 {
 				compatible = "amlogic,meson-axg-i2c";
 				status = "disabled";
-- 
2.47.1

[PATCH 4/4] arm64: dts: amlogic: t7: Add clk measure support

[Jian Hu]

Add the clock measure device to the T7 SoC family.

Signed-off-by: Jian Hu <jian.hu@amlogic.com>
---
 arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi b/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi
index 7fe72c94ed62..cec2ea74850d 100644
--- a/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi
+++ b/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi
@@ -701,6 +701,11 @@ pwm_ao_cd: pwm@60000 {
 				status = "disabled";
 			};
 
+			clock-measurer@48000 {
+				compatible = "amlogic,t7-clk-measure";
+				reg = <0x0 0x48000 0x0 0x1c>;
+			};
+
 			sd_emmc_a: mmc@88000 {
 				compatible = "amlogic,t7-mmc", "amlogic,meson-axg-mmc";
 				reg = <0x0 0x88000 0x0 0x800>;
-- 
2.47.1

Re: [PATCH 4/4] arm64: dts: amlogic: t7: Add clk measure support

[Ronald Claveau]

Hello Jian,

On 4/10/26 12:03 PM, Jian Hu wrote:
> Add the clock measure device to the T7 SoC family.
> 
> Signed-off-by: Jian Hu <jian.hu@amlogic.com>
> ---
>  arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi b/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi
> index 7fe72c94ed62..cec2ea74850d 100644
> --- a/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi
> +++ b/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi
> @@ -701,6 +701,11 @@ pwm_ao_cd: pwm@60000 {
>  				status = "disabled";
>  			};
>  
> +			clock-measurer@48000 {
> +				compatible = "amlogic,t7-clk-measure";
> +				reg = <0x0 0x48000 0x0 0x1c>;
> +			};
> +

Can you please order by reg, it should be between pwm_ao_gh and pwm_ab.
Thank you.

>  			sd_emmc_a: mmc@88000 {
>  				compatible = "amlogic,t7-mmc", "amlogic,meson-axg-mmc";
>  				reg = <0x0 0x88000 0x0 0x800>;


-- 
Best regards,
Ronald