linux-kernel - [PATCH v3 0/2] mmc: host: sdhci-esdhc-imx: implement emmc hardware reset

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Message-Id: <20241101-imx-emmc-reset-v3-0-184965eed476@solid-run.com>
Date: Fri, 01 Nov 2024 12:42:24 +0100
From: Josua Mayer <josua@...id-run.com>
To: Adrian Hunter <adrian.hunter@...el.com>, 
 Haibo Chen <haibo.chen@....com>, Ulf Hansson <ulf.hansson@...aro.org>, 
 Shawn Guo <shawnguo@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>
Cc: Mikhail Anikin <mikhail.anikin@...id-run.com>, 
 Jon Nettleton <jon@...id-run.com>, 
 Yazan Shhady <yazan.shhady@...id-run.com>, 
 Rabeeh Khoury <rabeeh@...id-run.com>, imx@...ts.linux.dev, 
 linux-mmc@...r.kernel.org, s32@....com, 
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 Josua Mayer <josua@...id-run.com>
Subject: [PATCH v3 0/2] mmc: host: sdhci-esdhc-imx: implement emmc hardware
 reset

Signed-off-by: Josua Mayer <josua@...id-run.com>
---
Changes in v3:
- reused existing control register definition from sdhci-esdhc.h
  (Reported-by: Bough Chen <haibo.chen@....com>)
- placed both control register mask definitions next to each other
- fixed timeout write register name
- Link to v2: https://lore.kernel.org/r/20241030-imx-emmc-reset-v2-0-b3a823393974@solid-run.com

Changes in v2:
- replaced udelay with usleep_range
  (Reported-by: Adrian Hunter <adrian.hunter@...el.com>)
- added comments for delay values
  (Reported-by: Peng Fan <peng.fan@....com>)
- delay values based on JEDEC Standard No. 84-B51, 6.15.10 H/W Reset Operation,
  on page 159
  (Thanks to Bough Chen <haibo.chen@....com>)
- added a second patch demonstrating a cosmetic issue revealed by first
  patch - it bothered me during development but is not important
- Link to v1: https://lore.kernel.org/r/20241027-imx-emmc-reset-v1-1-d5d0c672864a@solid-run.com

---
Josua Mayer (2):
      mmc: host: sdhci-esdhc-imx: implement emmc hardware reset
      mmc: host: sdhci-esdhc-imx: update esdhc sysctl dtocv bitmask

 drivers/mmc/host/sdhci-esdhc-imx.c | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)
---
base-commit: 9852d85ec9d492ebef56dc5f229416c925758edc
change-id: 20241027-imx-emmc-reset-7127d311174c

Best regards,
-- 
Josua Mayer <josua@...id-run.com>