[PATCH V5 5/8] soc: imx: add i.MX8MP HDMI blk ctrl HDCP/HRV_MWR
Peng Fan
peng.fan at oss.nxp.com
Wed Sep 7 17:20:11 PDT 2022
On 9/7/2022 10:41 AM, Peng Fan wrote:
>
>
> On 9/6/2022 10:37 PM, Alexander Stein wrote:
>> Hello,
>>
>> Am Montag, 22. August 2022, 08:45:33 CEST schrieb Peng Fan (OSS):
>>> From: Peng Fan <peng.fan at nxp.com>
>>>
>>> i.MX8MP HDMI supports HDCP and HRV_MWR(HDMI RX Video Memory Write Master
>>> for RXRX validation), so add them.
>>>
>>> Signed-off-by: Peng Fan <peng.fan at nxp.com>
>>> ---
>>> drivers/soc/imx/imx8mp-blk-ctrl.c | 30 ++++++++++++++++++++++++++++++
>>> 1 file changed, 30 insertions(+)
>>>
>>> diff --git a/drivers/soc/imx/imx8mp-blk-ctrl.c
>>> b/drivers/soc/imx/imx8mp-blk-ctrl.c index 6f983adcb47c..527d45d12a54
>>> 100644
>>> --- a/drivers/soc/imx/imx8mp-blk-ctrl.c
>>> +++ b/drivers/soc/imx/imx8mp-blk-ctrl.c
>>> @@ -235,6 +235,13 @@ static void imx8mp_hdmi_blk_ctrl_power_on(struct
>>> imx8mp_blk_ctrl *bc, regmap_set_bits(bc->regmap, HDMI_RTX_RESET_CTL0,
>>> BIT(12));
>>> regmap_clear_bits(bc->regmap, HDMI_TX_CONTROL0, BIT(3));
>>> break;
>>> + case IMX8MP_HDMIBLK_PD_HDCP:
>>> + regmap_set_bits(bc->regmap, HDMI_RTX_CLK_CTL0, BIT(11));
>>> + break;
>>> + case IMX8MP_HDMIBLK_PD_HRV:
>>> + regmap_set_bits(bc->regmap, HDMI_RTX_CLK_CTL1, BIT(3) |
>> BIT(4) | BIT(5));
>>> + regmap_set_bits(bc->regmap, HDMI_RTX_RESET_CTL0,
>> BIT(15));
>>> + break;
>>> default:
>>> break;
>>> }
>>> @@ -283,6 +290,13 @@ static void imx8mp_hdmi_blk_ctrl_power_off(struct
>>> imx8mp_blk_ctrl *bc, regmap_clear_bits(bc->regmap, HDMI_RTX_RESET_CTL0,
>>> BIT(12));
>>> regmap_clear_bits(bc->regmap, HDMI_RTX_CLK_CTL1, BIT(22)
>> | BIT(24));
>>> break;
>>> + case IMX8MP_HDMIBLK_PD_HDCP:
>>> + regmap_clear_bits(bc->regmap, HDMI_RTX_CLK_CTL0,
>> BIT(11));
>>> + break;
>>> + case IMX8MP_HDMIBLK_PD_HRV:
>>> + regmap_clear_bits(bc->regmap, HDMI_RTX_RESET_CTL0,
>> BIT(15));
>>> + regmap_clear_bits(bc->regmap, HDMI_RTX_CLK_CTL1, BIT(3)
>> | BIT(4) |
>>> BIT(5)); + break;
>>> default:
>>> break;
>>> }
>>> @@ -365,6 +379,22 @@ static const struct imx8mp_blk_ctrl_domain_data
>>> imx8mp_hdmi_domain_data[] = { .num_clks = 2,
>>> .gpc_name = "hdmi-tx-phy",
>>> },
>>> + [IMX8MP_HDMIBLK_PD_HRV] = {
>>> + .name = "hdmiblk-hrv",
>>> + .clk_names = (const char *[]){ "axi", "apb" },
>>> + .num_clks = 2,
>>> + .gpc_name = "hrv",
>>> + .path_names = (const char *[]){"hrv"},
>>> + .num_paths = 1,
>>> + },
>>> + [IMX8MP_HDMIBLK_PD_HDCP] = {
>>> + .name = "hdmiblk-hdcp",
>>> + .clk_names = (const char *[]){ "axi", "apb" },
>>> + .num_clks = 2,
>>> + .gpc_name = "hdcp",
>>> + .path_names = (const char *[]){"hdcp"},
>>> + .num_paths = 1,
>>> + },
>>> };
>>>
>>> static const struct imx8mp_blk_ctrl_data
>>> imx8mp_hdmi_blk_ctl_dev_data = {
>>
>> Something is missing here. Iget the following error during boot:
>> [ 0.886211] Unable to handle kernel NULL pointer dereference at
>> virtual
>> address 0000000000000000
>> [ 0.895043] Mem abort info:
>> [ 0.897841] ESR = 0x0000000096000004
>> [ 0.901606] EC = 0x25: DABT (current EL), IL = 32 bits
>> [ 0.906942] SET = 0, FnV = 0
>> [ 0.910003] EA = 0, S1PTW = 0
>> [ 0.913159] FSC = 0x04: level 0 translation fault
>> [ 0.918054] Data abort info:
>> [ 0.920943] ISV = 0, ISS = 0x00000004
>> [ 0.924791] CM = 0, WnR = 0
>> [ 0.927761] [0000000000000000] user address but active_mm is swapper
>> [ 0.934157] Internal error: Oops: 96000004 [#1] PREEMPT SMP
>> [ 0.939749] Modules linked in:
>> [ 0.942813] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 6.0.0-rc4-
>> next-20220906+ #674 2c55fa642ba20b0dbb66c0e78dacc9ca96d5e733
>> [ 0.954099] Hardware name: TQ-Systems i.MX8MPlus TQMa8MPxL on
>> MBa8MPxL (DT)
>> [ 0.961100] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS
>> BTYPE=--)
>> [ 0.968099] pc : kobject_set_name_vargs+0x10/0xd0
>> [ 0.972823] lr : dev_set_name+0x58/0x80
>> [ 0.976674] sp : ffff800009c7b860
>> [ 0.979997] x29: ffff800009c7b860 x28: ffff000002d728f8 x27:
>> 0000000000000150
>> [ 0.987172] x26: 0000000000000009 x25: 0000000000000007 x24:
>> ffff800009ab8958
>> [ 0.994347] x23: ffff0000000a0000 x22: ffff800008eb77d8 x21:
>> ffff000000225410
>> [ 1.001524] x20: ffff800008eb7808 x19: 0000000000000000 x18:
>> 0000000000000000
>> [ 1.008697] x17: 702d78742d696d64 x16: 682d6b6c62696d64 x15:
>> 68203a656d616e3e
>> [ 1.015872] x14: 0000000000000000 x13: 70636468203a656d x12:
>> 616e5f6370673e2d
>> [ 1.023047] x11: 61746164203a6c72 x10: 74632d6b6c622e30 x9 :
>> 7274632d6b6c622e
>> [ 1.030222] x8 : 3030303063663233 x7 : 205d353039393738 x6 :
>> ffff800009a240e0
>> [ 1.037397] x5 : 00000000ffffffd0 x4 : ffff800009c7b920 x3 :
>> 00000000ffffffd0
>> [ 1.044572] x2 : ffff800009c7b8d0 x1 : ffff80000936ca78 x0 :
>> 0000000000000000
>> [ 1.051749] Call trace:
>> [ 1.054199] kobject_set_name_vargs+0x10/0xd0
>> [ 1.058574] dev_set_name+0x58/0x80
>> [ 1.062072] imx8mp_blk_ctrl_probe+0x5c0/0x660
>> [ 1.066534] platform_probe+0x64/0x100
>> [ 1.070297] call_driver_probe+0x28/0x140
>> [ 1.074322] really_probe+0xc0/0x334
>> [ 1.077909] __driver_probe_device+0x84/0x144
>> [ 1.082284] driver_probe_device+0x38/0x130
>> [ 1.086486] __driver_attach+0xac/0x244
>> [ 1.090334] bus_for_each_dev+0x6c/0xc0
>> [ 1.094184] driver_attach+0x20/0x30
>> [ 1.097772] bus_add_driver+0x174/0x244
>> [ 1.101622] driver_register+0x74/0x120
>> [ 1.105474] __platform_driver_register+0x24/0x30
>> [ 1.110197] imx8mp_blk_ctrl_driver_init+0x18/0x20
>> [ 1.115009] do_one_initcall+0x58/0x200
>> [ 1.118861] do_initcalls+0x164/0x19c
>> [ 1.122534] kernel_init_freeable+0x134/0x17c
>> [ 1.126909] kernel_init+0x2c/0x150
>> [ 1.130411] ret_from_fork+0x10/0x20
>> [ 1.134003] Code: a9bb7bfd 910003fd a90153f3 aa0003f3 (f9400000)
>> [ 1.140127] ---[ end trace 0000000000000000 ]---
>>
>> Adding some debug out shows:
>> [ 0.866795] imx8mp-blk-ctrl 32fc0000.blk-ctrl: domain->power_dev: 0x0
>> [ 0.873257] imx8mp-blk-ctrl 32fc0000.blk-ctrl: data->name:
>> hdmiblk-hdcp
>> [ 0.879905] imx8mp-blk-ctrl 32fc0000.blk-ctrl: data->gpc_name: hdcp
>>
>> AFAICS the power domains 'hrv' and 'hdcp' are missing in the
>> 'hdmi_blk_ctrl:
>> blk-ctrl at 32fc0000' node thus resulting in a NULL pointer from calling
>> dev_pm_domain_attach_by_name().
yes, you are correct.
Should add hrv/hdcp entry in hdmi_blk_ctrl node to Lucas's patch:
https://lore.kernel.org/all/20220826192932.3217260-1-l.stach@pengutronix.de/
Regards,
Peng.
>
> The HDMI blk ctrl dts not landed in Shawn's branch, could you share me
> your dts change?
>
> And dev_set_name, as I recall, Lucas has a patch to remove that.
>
> Regards,
> Peng.
>
>>
>> Is there a patch I am missing.
>>
>> Best regards,
>> Alexander
>>
>>
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