From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D88D8C7EE45 for ; Thu, 2 Mar 2023 00:58:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229595AbjCBA6u (ORCPT ); Wed, 1 Mar 2023 19:58:50 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41580 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229579AbjCBA6t (ORCPT ); Wed, 1 Mar 2023 19:58:49 -0500 Received: from codeconstruct.com.au (pi.codeconstruct.com.au [203.29.241.158]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1BD132A17B; Wed, 1 Mar 2023 16:58:46 -0800 (PST) Received: by codeconstruct.com.au (Postfix, from userid 10000) id 084DC20263; Thu, 2 Mar 2023 08:58:43 +0800 (AWST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=codeconstruct.com.au; s=2022a; t=1677718723; bh=0kwMhqVKXMShhj9z9nunJyIHNvvxeZ99kfoySaYtGoU=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=a+eNlAW+VBKOSFkBgBOLdwafZVZonsBjJ7+SxU+WiK6EIACZ/hW3esQZHER6YrjoE sXxLdSvlB7fzTBVqXftuInoscOKsAASuQZrnQcHyl7iR6FiwkUqk9+2Rvn3wxF8ZTs TFFZg+uavm1y2LNuoBsdoLXFMbj0AKAlXF/ed2KvcfF+JuvsO0RR9bU55JcrRu99Ag 82d475R+yR5DxhR5snO++RcvfBeRHW5a1IL9gv9W1hRbR7baB68hScnP2RImD4+0Fu qcqI6au2krfdTmWU2f9jBgvlo2yukQvpc9+8DHpkG+1SUqZxn4oQkMd43BNdWcH/gS x+gRpY882Pc7g== From: Jeremy Kerr To: devicetree@vger.kernel.org, linux-aspeed@lists.ozlabs.org, linux-clk@vger.kernel.org Cc: Krzysztof Kozlowski , Michael Turquette , Rob Herring , Stephen Boyd , Dylan Hung , Joel Stanley , Andrew Jeffery Subject: [PATCH v5 3/6] clk: ast2600: Add full configs for I3C clocks Date: Thu, 2 Mar 2023 08:58:31 +0800 Message-Id: <20230302005834.13171-4-jk@codeconstruct.com.au> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230302005834.13171-1-jk@codeconstruct.com.au> References: <20230302005834.13171-1-jk@codeconstruct.com.au> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org The current ast2600 I3C clock definitions are top-level (rather than based on their actual hw sources: either HCLK or APLL), and include a couple of definitions for (non-existent) i3c6 and i3c7. Re-parent the individual I3C controller clocks to the main i3c clock, explicitly sourced from the APLL rather than whatever G6_CLK_SELECTION5 was last set to. While we're at it, remove the definitions for the i3c6 and i3c7 clock lines; this hardware isn't present. This is a partial cherry-pick and rework of ed44b8cdfdb and 1a35eb926d7 from Aspeed's own tree, originally by Dylan Hung . Signed-off-by: Jeremy Kerr --- v5: - use regmap_update_bits() - add comment on NUM_CLKS semantics v4: - expand NUM_CLKS for the new I3C clock v3: - split dt-bindings and clk changes v2: - reword commit message --- drivers/clk/clk-ast2600.c | 43 +++++++++++++++++++++++++++++++-------- 1 file changed, 34 insertions(+), 9 deletions(-) diff --git a/drivers/clk/clk-ast2600.c b/drivers/clk/clk-ast2600.c index 1f08ff3c60fa..09f26ab5f9af 100644 --- a/drivers/clk/clk-ast2600.c +++ b/drivers/clk/clk-ast2600.c @@ -15,7 +15,11 @@ #include "clk-aspeed.h" -#define ASPEED_G6_NUM_CLKS 71 +/* + * This includes the gates (configured from aspeed_g6_gates), plus the + * explicitly-configured clocks (ASPEED_CLK_HPLL and up). + */ +#define ASPEED_G6_NUM_CLKS 72 #define ASPEED_G6_SILICON_REV 0x014 #define CHIP_REVISION_ID GENMASK(23, 16) @@ -32,6 +36,20 @@ #define ASPEED_G6_CLK_SELECTION1 0x300 #define ASPEED_G6_CLK_SELECTION2 0x304 #define ASPEED_G6_CLK_SELECTION4 0x310 +#define ASPEED_G6_CLK_SELECTION5 0x314 +#define I3C_CLK_SELECTION_SHIFT 31 +#define I3C_CLK_SELECTION BIT(31) +#define I3C_CLK_SELECT_HCLK (0 << I3C_CLK_SELECTION_SHIFT) +#define I3C_CLK_SELECT_APLL_DIV (1 << I3C_CLK_SELECTION_SHIFT) +#define APLL_DIV_SELECTION_SHIFT 28 +#define APLL_DIV_SELECTION GENMASK(30, 28) +#define APLL_DIV_2 (0b001 << APLL_DIV_SELECTION_SHIFT) +#define APLL_DIV_3 (0b010 << APLL_DIV_SELECTION_SHIFT) +#define APLL_DIV_4 (0b011 << APLL_DIV_SELECTION_SHIFT) +#define APLL_DIV_5 (0b100 << APLL_DIV_SELECTION_SHIFT) +#define APLL_DIV_6 (0b101 << APLL_DIV_SELECTION_SHIFT) +#define APLL_DIV_7 (0b110 << APLL_DIV_SELECTION_SHIFT) +#define APLL_DIV_8 (0b111 << APLL_DIV_SELECTION_SHIFT) #define ASPEED_HPLL_PARAM 0x200 #define ASPEED_APLL_PARAM 0x210 @@ -97,14 +115,13 @@ static const struct aspeed_gate_data aspeed_g6_gates[] = { [ASPEED_CLK_GATE_LHCCLK] = { 37, -1, "lhclk-gate", "lhclk", 0 }, /* LPC master/LPC+ */ /* Reserved 38 RSA: no longer used */ /* Reserved 39 */ - [ASPEED_CLK_GATE_I3C0CLK] = { 40, 40, "i3c0clk-gate", NULL, 0 }, /* I3C0 */ - [ASPEED_CLK_GATE_I3C1CLK] = { 41, 41, "i3c1clk-gate", NULL, 0 }, /* I3C1 */ - [ASPEED_CLK_GATE_I3C2CLK] = { 42, 42, "i3c2clk-gate", NULL, 0 }, /* I3C2 */ - [ASPEED_CLK_GATE_I3C3CLK] = { 43, 43, "i3c3clk-gate", NULL, 0 }, /* I3C3 */ - [ASPEED_CLK_GATE_I3C4CLK] = { 44, 44, "i3c4clk-gate", NULL, 0 }, /* I3C4 */ - [ASPEED_CLK_GATE_I3C5CLK] = { 45, 45, "i3c5clk-gate", NULL, 0 }, /* I3C5 */ - [ASPEED_CLK_GATE_I3C6CLK] = { 46, 46, "i3c6clk-gate", NULL, 0 }, /* I3C6 */ - [ASPEED_CLK_GATE_I3C7CLK] = { 47, 47, "i3c7clk-gate", NULL, 0 }, /* I3C7 */ + [ASPEED_CLK_GATE_I3C0CLK] = { 40, 40, "i3c0clk-gate", "i3cclk", 0 }, /* I3C0 */ + [ASPEED_CLK_GATE_I3C1CLK] = { 41, 41, "i3c1clk-gate", "i3cclk", 0 }, /* I3C1 */ + [ASPEED_CLK_GATE_I3C2CLK] = { 42, 42, "i3c2clk-gate", "i3cclk", 0 }, /* I3C2 */ + [ASPEED_CLK_GATE_I3C3CLK] = { 43, 43, "i3c3clk-gate", "i3cclk", 0 }, /* I3C3 */ + [ASPEED_CLK_GATE_I3C4CLK] = { 44, 44, "i3c4clk-gate", "i3cclk", 0 }, /* I3C4 */ + [ASPEED_CLK_GATE_I3C5CLK] = { 45, 45, "i3c5clk-gate", "i3cclk", 0 }, /* I3C5 */ + /* Reserved: 46 & 47 */ [ASPEED_CLK_GATE_UART1CLK] = { 48, -1, "uart1clk-gate", "uart", 0 }, /* UART1 */ [ASPEED_CLK_GATE_UART2CLK] = { 49, -1, "uart2clk-gate", "uart", 0 }, /* UART2 */ [ASPEED_CLK_GATE_UART3CLK] = { 50, -1, "uart3clk-gate", "uart", 0 }, /* UART3 */ @@ -775,6 +792,14 @@ static void __init aspeed_g6_cc(struct regmap *map) /* USB 2.0 port1 phy 40MHz clock */ hw = clk_hw_register_fixed_rate(NULL, "usb-phy-40m", NULL, 0, 40000000); aspeed_g6_clk_data->hws[ASPEED_CLK_USBPHY_40M] = hw; + + /* i3c clock: source from apll, divide by 8 */ + regmap_update_bits(map, ASPEED_G6_CLK_SELECTION5, + I3C_CLK_SELECTION | APLL_DIV_SELECTION, + I3C_CLK_SELECT_APLL_DIV | APLL_DIV_8); + + hw = clk_hw_register_fixed_factor(NULL, "i3cclk", "apll", 0, 1, 8); + aspeed_g6_clk_data->hws[ASPEED_CLK_I3C] = hw; }; static void __init aspeed_g6_cc_init(struct device_node *np) -- 2.39.1