On 2/21/24 06:40, Sumit Garg wrote:
On Tue, 20 Feb 2024 at 21:02, Marek Vasut <ma...@denx.de> wrote:

On 2/20/24 14:10, Sumit Garg wrote:
Pre-requisite to enable PCIe support on iMX8MP SoC.

Please write a proper commit message .


How about the following?

     Add support for i.MX8MP reset controller. It is required
     to enable PCIe support on the iMX8MP SoC.

The part about PCIe is not relevant, it is a reset controller and it is needed to reset various IPs. See e.g. Linux:

e08672c03981 ("reset: imx7: Add support for i.MX8MP SoC")

Signed-off-by: Sumit Garg <sumit.g...@linaro.org>
---
   drivers/reset/reset-imx7.c | 114 +++++++++++++++++++++++++++++++++++++
   1 file changed, 114 insertions(+)

diff --git a/drivers/reset/reset-imx7.c b/drivers/reset/reset-imx7.c
index eaef2cc2cdf..c1de84dea8b 100644
--- a/drivers/reset/reset-imx7.c
+++ b/drivers/reset/reset-imx7.c
@@ -10,6 +10,7 @@
   #include <dm.h>
   #include <dt-bindings/reset/imx7-reset.h>
   #include <dt-bindings/reset/imx8mq-reset.h>
+#include <dt-bindings/reset/imx8mp-reset.h>
   #include <reset-uclass.h>
   #include <linux/bitops.h>
   #include <linux/delay.h>
@@ -252,6 +253,115 @@ static int imx7_reset_assert_imx8mq(struct reset_ctl *rst)
       return 0;
   }

+enum imx8mp_src_registers {
+     SRC_SUPERMIX_RCR        = 0x0018,
+     SRC_AUDIOMIX_RCR        = 0x001c,
+     SRC_MLMIX_RCR           = 0x0028,
+     SRC_GPU2D_RCR           = 0x0038,
+     SRC_GPU3D_RCR           = 0x003c,
+     SRC_VPU_G1_RCR          = 0x0048,
+     SRC_VPU_G2_RCR          = 0x004c,
+     SRC_VPUVC8KE_RCR        = 0x0050,
+     SRC_NOC_RCR             = 0x0054,
+};

This seems copied from Linux, include Linux commit ID as of which this
was imported from in commit message.

Do you expect imx8mp_src_registers to change? I expect them to be the
same, so does Linux commit ID add any value here?

The import commit ID makes it easier to cherry-pick follow up patches or check for changes. If that commit ID is missing, that task is harder.

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