From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ryder Lee Subject: Re: [PATCH v2 2/5] clk: mediatek: modify MT7622 audsys to adapt MFD device Date: Thu, 8 Feb 2018 13:57:27 +0800 Message-ID: <1518069447.28878.4.camel@mtkswgap22> References: <72058f8d-c83d-d0e6-dc07-83c9f5fc2710@gmail.com> <1517803655.1173.12.camel@mtkswgap22> <0e0e703c-0ac9-06ad-91c5-abdf16de1ee9@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <0e0e703c-0ac9-06ad-91c5-abdf16de1ee9@gmail.com> Sender: linux-clk-owner@vger.kernel.org To: Matthias Brugger Cc: Stephen Boyd , Rob Herring , Mark Brown , Lee Jones , linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org, Garlic Tseng List-Id: devicetree@vger.kernel.org On Wed, 2018-02-07 at 16:18 +0100, Matthias Brugger wrote: > > On 02/05/2018 05:07 AM, Ryder Lee wrote: > > On Sat, 2018-02-03 at 15:26 +0100, Matthias Brugger wrote: > >> > >> On 01/31/2018 08:42 AM, Ryder Lee wrote: > >>> As the new MFD parent is in place, switch probing method to adapt it. > >>> > >>> Signed-off-by: Ryder Lee > >>> --- > >>> drivers/clk/mediatek/clk-mt7622-aud.c | 3 ++- > >>> 1 file changed, 2 insertions(+), 1 deletion(-) > >>> > >>> diff --git a/drivers/clk/mediatek/clk-mt7622-aud.c b/drivers/clk/mediatek/clk-mt7622-aud.c > >>> index 13f752d..8c18536 100644 > >>> --- a/drivers/clk/mediatek/clk-mt7622-aud.c > >>> +++ b/drivers/clk/mediatek/clk-mt7622-aud.c > >>> @@ -142,11 +142,12 @@ static int clk_mt7622_audiosys_init(struct platform_device *pdev) > >>> { > >>> struct clk_onecell_data *clk_data; > >>> struct device_node *node = pdev->dev.of_node; > >>> + struct device_node *pnode = pdev->dev.parent->of_node; > >>> int r; > >>> > >>> clk_data = mtk_alloc_clk_data(CLK_AUDIO_NR_CLK); > >>> > >>> - mtk_clk_register_gates(node, audio_clks, ARRAY_SIZE(audio_clks), > >>> + mtk_clk_register_gates(pnode, audio_clks, ARRAY_SIZE(audio_clks), > >> > >> We will need a fallback here for older device tree bindings. > >> > >> Regards, > >> Matthias > > > > Up to now, I didn't see both driver and bindings are used anywhere. > > Should I still care about that? > > > > Yes please, we have to ensure that newer kernel work with older bindings and > vice-versa. OKay. An unrelated question - is it possible to change the compatible string (*-audsys-clk) without breaking backward compatible?