Hello,
Am Montag, 22. August 2022, 08:45:33 CEST schrieb Peng Fan (OSS):
> From: Peng Fan <peng.fan@xxxxxxx>
>
> 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@xxxxxxx>
> ---
> 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@32fc0000' node thus resulting in a NULL pointer from calling
dev_pm_domain_attach_by_name().
Is there a patch I am missing.
Best regards,
Alexander
