From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alban Subject: Re: [PATCH v3 1/3] nvmem: Update the OF binding to use a subnode for the cells list Date: Fri, 8 Jun 2018 12:59:38 +0200 Message-ID: <20180608125938.4fd457a0@tock> References: <1521933899-362-1-git-send-email-albeu@free.fr> <1521933899-362-2-git-send-email-albeu@free.fr> <344e0087-7410-aebb-8a66-c6976064df10@linaro.org> <20180417165420.423a691b@avionic-0020> <8c4b48ad-e99e-030a-a4ee-b6df0fa59c79@linaro.org> <20180417180040.04f53495@avionic-0020> <20180418134119.2e587621@avionic-0020> <9f7d2987-b33e-79b5-ae58-2985fd7334e4@linaro.org> <20180418143243.3c23493c@avionic-0020> <20180418153440.187ed16e@avionic-0020> <20180607184155.6da38a01@tock> <0fb0e8e9-e7b8-10c3-fcdd-399c73a33878@linaro.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; boundary="Sig_/4e/V8.qtwWgCC02QHOtNyeP"; protocol="application/pgp-signature" Return-path: In-Reply-To: <0fb0e8e9-e7b8-10c3-fcdd-399c73a33878@linaro.org> Sender: linux-kernel-owner@vger.kernel.org To: Srinivas Kandagatla Cc: Aban Bedel , linux-kernel@vger.kernel.org, Rob Herring , Mark Rutland , David Woodhouse , Brian Norris , Boris Brezillon , Marek Vasut , Richard Weinberger , Cyrille Pitchen , devicetree@vger.kernel.org, linux-mtd@lists.infradead.org List-Id: devicetree@vger.kernel.org --Sig_/4e/V8.qtwWgCC02QHOtNyeP Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Thu, 7 Jun 2018 18:03:16 +0100 Srinivas Kandagatla wrote: > On 07/06/18 17:41, Alban wrote: > > AFAIU the only thing that we disagree on now is if the nodes > > representing the cells should be direct children of the provider > > or in a dedicated subnode. For the MTD case both solution would solve > > the binding clash. I would really appreciate if the DT people could =20 > Am reluctant in changing the nvmem generic bindings for a special case. Where I think the generic binding is fundamentally flawed, as this problem will most probably appear again. But do note that my proposal doesn't require updating the dts using the original binding, both are still supported. I proposed deprecating the current binding because I think it is flawed, but we could also "officially" support both style. > Can you try this with your original subnode proposal: > just pass the subnode node pointer in np of nvmem_config: >=20 > ------------------------->cut<------------------------------------ =20 > diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c > index b05aa8e81303..c9621632bbfb 100644 > --- a/drivers/nvmem/core.c > +++ b/drivers/nvmem/core.c > @@ -472,7 +472,11 @@ struct nvmem_device *nvmem_register(const struct=20 > nvmem_config *config) > nvmem->priv =3D config->priv; > nvmem->reg_read =3D config->reg_read; > nvmem->reg_write =3D config->reg_write; > - nvmem->dev.of_node =3D config->dev->of_node; > + > + if (config->np) > + nvmem->dev.of_node =3D config->np; > + else > + nvmem->dev.of_node =3D config->dev->of_node; >=20 > if (config->id =3D=3D -1 && config->name) { > dev_set_name(&nvmem->dev, "%s", config->name); > diff --git a/include/linux/nvmem-provider.h > b/include/linux/nvmem-provider.h index f89598bc4e1c..743345ffe2c8 > 100644 --- a/include/linux/nvmem-provider.h > +++ b/include/linux/nvmem-provider.h > @@ -49,6 +49,7 @@ typedef int (*nvmem_reg_write_t)(void *priv, > unsigned int offset,nvmem_device_get( > */ > struct nvmem_config { > struct device *dev; > + struct device_node *np; > const char *name; > int id; > struct module *owner; >=20 > ------------------------->cut<------------------------------------ =20 That should work just fine to allow next to any kind of binding. I'll do a new patch using this approach for the code side and leaving the generic binding as it is. Alban --Sig_/4e/V8.qtwWgCC02QHOtNyeP Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAEBCAAGBQJbGmGaAAoJEHSUmkuduC28bpsQAOMfOXhboUrCBmyohY7223ev QVvZKeMaCg4/9f5Ask/+nW7GE2bng9aL3CPPcp5C8zzfDJW9VPtZ6aqdQBxOS/GV 7WwnKaIc3qzBvmIyqFWEoZal4dv2C+AUW58CpukTPSo+upgLPD+L6stoXMWTK4ek c1GVu4EDLCov7W2HGrdXI12sx9d/9yIEyNn8GnQtQYuYU2dZnSDuIvKIL/qeRKP1 T9k7IDyneRHx4XIQj58wZll9UUYfE5PfkRx2mYGkxO8BttTFRHjtQIfgw9mmb3/s KCwVyHQGjV0r6ixja0hEdczVz4VnRxmCs/Q58dF3FZDzfmKrPuXEphWTtjlouieK sKZWtQ5ZcU2IcQ9YSjVojHczbO5wyWpIuhj9ZTOOsRn/BbfMKtm08+VvUlaw0s4L pu7LNW066bCr/PxcDdTL8OPGvImrCQJABUFAiclw/OOyF/ZL93/+vrX2uDoHUZfe MRhSKApkFholQ63q5pj+1Xutr4hSdEVLip500sAUVjdEz53xDqJJuHADlGHBpbu5 NEW+ic33Tdkga+tR7mseq/JRcB9tVmkBreea7ytulSx86At1GWgfUVNx+ni/DzcT DNCDc5/Ia9BTKd1tuaSMXIghsdW++oIHZPh1tDi9DbC4IxdsjhMWyacAROXzoBmw QfvuT4yaKCg6aldCYddf =E5vJ -----END PGP SIGNATURE----- --Sig_/4e/V8.qtwWgCC02QHOtNyeP--