openbmc.lists.ozlabs.org archive mirror
 help / color / mirror / Atom feed
From: Andrew Jeffery <andrew@aj.id.au>
To: openipmi-developer@lists.sourceforge.net,
	openbmc@lists.ozlabs.org, minyard@acm.org
Cc: devicetree@vger.kernel.org, tmaimon77@gmail.com,
	linux-aspeed@lists.ozlabs.org, linux-gpio@vger.kernel.org,
	avifishman70@gmail.com, venture@google.com,
	linus.walleij@linaro.org, linux-kernel@vger.kernel.org,
	tali.perry1@gmail.com, robh+dt@kernel.org, lee.jones@linaro.org,
	chiawei_wang@aspeedtech.com,
	linux-arm-kernel@lists.infradead.org, benjaminfair@google.com
Subject: [PATCH 17/19] dt-bindings: ipmi: Add optional SerIRQ property to ASPEED KCS devices
Date: Sat, 20 Feb 2021 00:55:21 +1030	[thread overview]
Message-ID: <20210219142523.3464540-18-andrew@aj.id.au> (raw)
In-Reply-To: <20210219142523.3464540-1-andrew@aj.id.au>

Allocating IO and IRQ resources to LPC devices is in-theory an operation
for the host, however ASPEED don't appear to expose this capability
outside the BMC (e.g. SuperIO). Instead, we are left with BMC-internal
registers for managing these resources, so introduce a devicetree
property for KCS devices to describe SerIRQ properties.

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
---
 .../bindings/ipmi/aspeed,ast2400-kcs-bmc.yaml      | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/Documentation/devicetree/bindings/ipmi/aspeed,ast2400-kcs-bmc.yaml b/Documentation/devicetree/bindings/ipmi/aspeed,ast2400-kcs-bmc.yaml
index 1c1cc4265948..808475a2c2ca 100644
--- a/Documentation/devicetree/bindings/ipmi/aspeed,ast2400-kcs-bmc.yaml
+++ b/Documentation/devicetree/bindings/ipmi/aspeed,ast2400-kcs-bmc.yaml
@@ -47,6 +47,18 @@ properties:
       channels the status address is derived from the data address, but the
       status address may be optionally provided.
 
+  aspeed,lpc-interrupts:
+    $ref: "/schemas/types.yaml#/definitions/uint32-matrix"
+    minItems: 1
+    maxItems: 1
+    description: |
+      A 2-cell property expressing the LPC SerIRQ number and the interrupt
+      level/sense encoding (specified in the standard fashion).
+
+      Note that the generated interrupt is issued from the BMC to the host, and
+      thus the target interrupt controller is not captured by the BMC's
+      devicetree.
+
   kcs_chan:
     deprecated: true
     $ref: '/schemas/types.yaml#/definitions/uint32'
@@ -84,9 +96,11 @@ allOf:
 
 examples:
   - |
+    #include <dt-bindings/interrupt-controller/irq.h>
     kcs3: kcs@24 {
         compatible = "aspeed,ast2600-kcs-bmc";
         reg = <0x24 0x1>, <0x30 0x1>, <0x3c 0x1>;
         aspeed,lpc-io-reg = <0xca2>;
+        aspeed,lpc-interrupts = <11 IRQ_TYPE_LEVEL_LOW>;
         interrupts = <8>;
     };
-- 
2.27.0


  parent reply	other threads:[~2021-02-19 14:35 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-19 14:25 [PATCH 00/19] ipmi: Allow raw access to KCS devices Andrew Jeffery
2021-02-19 14:25 ` [PATCH 01/19] dt-bindings: aspeed-lpc: Remove LPC partitioning Andrew Jeffery
2021-02-22  9:04   ` Lee Jones
2021-02-19 14:25 ` [PATCH 02/19] ARM: dts: Remove LPC BMC and Host partitions Andrew Jeffery
2021-02-19 14:25 ` [PATCH 03/19] ipmi: kcs: aspeed: Adapt to new LPC DTS layout Andrew Jeffery
2021-02-19 14:25 ` [PATCH 04/19] pinctrl: aspeed-g5: Adapt to new LPC device tree layout Andrew Jeffery
2021-02-19 14:25 ` [PATCH 05/19] soc: aspeed: " Andrew Jeffery
2021-02-19 14:25 ` [PATCH 06/19] ipmi: kcs_bmc_aspeed: Use of match data to extract KCS properties Andrew Jeffery
2021-02-19 14:25 ` [PATCH 07/19] ipmi: kcs_bmc: Make status update atomic Andrew Jeffery
2021-02-19 14:25 ` [PATCH 08/19] ipmi: kcs_bmc: Rename {read, write}_{status, data}() functions Andrew Jeffery
2021-02-19 14:25 ` [PATCH 09/19] ipmi: kcs_bmc: Split out kcs_bmc_cdev_ipmi Andrew Jeffery
2021-02-19 14:25 ` [PATCH 10/19] ipmi: kcs_bmc: Turn the driver data-structures inside-out Andrew Jeffery
2021-02-19 14:25 ` [PATCH 11/19] ipmi: kcs_bmc: Split headers into device and client Andrew Jeffery
2021-02-19 14:25 ` [PATCH 12/19] ipmi: kcs_bmc: Strip private client data from struct kcs_bmc Andrew Jeffery
2021-02-21 13:55   ` kernel test robot
2021-02-19 14:25 ` [PATCH 13/19] ipmi: kcs_bmc: Decouple the IPMI chardev from the core Andrew Jeffery
2021-02-19 14:25 ` [PATCH 14/19] ipmi: kcs_bmc: Allow clients to control KCS IRQ state Andrew Jeffery
2021-02-19 14:25 ` [PATCH 15/19] ipmi: kcs_bmc: Add a "raw" character device interface Andrew Jeffery
2021-02-21 13:54   ` kernel test robot
2021-02-21 15:36   ` kernel test robot
2021-02-19 14:25 ` [PATCH 16/19] dt-bindings: ipmi: Convert ASPEED KCS binding to schema Andrew Jeffery
2021-03-05 23:07   ` Rob Herring
2021-03-09  2:45     ` Andrew Jeffery
2021-02-19 14:25 ` Andrew Jeffery [this message]
2021-03-05 23:09   ` [PATCH 17/19] dt-bindings: ipmi: Add optional SerIRQ property to ASPEED KCS devices Rob Herring
2021-03-09  2:44     ` Andrew Jeffery
2021-02-19 14:25 ` [PATCH 18/19] ipmi: kcs_bmc_aspeed: Implement KCS SerIRQ configuration Andrew Jeffery
2021-02-19 14:25 ` [PATCH 19/19] ipmi: kcs_bmc_aspeed: Fix IBFIE typo from datasheet Andrew Jeffery

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210219142523.3464540-18-andrew@aj.id.au \
    --to=andrew@aj.id.au \
    --cc=avifishman70@gmail.com \
    --cc=benjaminfair@google.com \
    --cc=chiawei_wang@aspeedtech.com \
    --cc=devicetree@vger.kernel.org \
    --cc=lee.jones@linaro.org \
    --cc=linus.walleij@linaro.org \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-aspeed@lists.ozlabs.org \
    --cc=linux-gpio@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=minyard@acm.org \
    --cc=openbmc@lists.ozlabs.org \
    --cc=openipmi-developer@lists.sourceforge.net \
    --cc=robh+dt@kernel.org \
    --cc=tali.perry1@gmail.com \
    --cc=tmaimon77@gmail.com \
    --cc=venture@google.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).