From patchwork Wed May 22 17:31:29 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heiko Stuebner X-Patchwork-Id: 1937946 X-Patchwork-Delegate: ykai007@gmail.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=patchwork.ozlabs.org) Received: from phobos.denx.de (phobos.denx.de [IPv6:2a01:238:438b:c500:173d:9f52:ddab:ee01]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4Vkyz70BWcz2020 for ; Thu, 23 May 2024 03:31:46 +1000 (AEST) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id CE7FF88869; Wed, 22 May 2024 19:31:43 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=fail (p=none dis=none) header.from=sntech.de Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Received: by phobos.denx.de (Postfix, from userid 109) id 82AF688860; Wed, 22 May 2024 19:31:42 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,SPF_HELO_NONE, SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.2 Received: from gloria.sntech.de (gloria.sntech.de [185.11.138.130]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id 444B588877 for ; Wed, 22 May 2024 19:31:40 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=fail (p=none dis=none) header.from=sntech.de Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=heiko@sntech.de Received: from i5e860cd9.versanet.de ([94.134.12.217] helo=phil.lan) by gloria.sntech.de with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1s9poP-00025v-M2; Wed, 22 May 2024 19:31:37 +0200 From: Heiko Stuebner To: kever.yang@rock-chips.com, philipp.tomsich@vrull.eu, sjg@chromium.org Cc: lukma@denx.de, seanga2@gmail.com, zhangqing@rock-chips.com, u-boot@lists.denx.de, Heiko Stuebner , Andy Yan , Jonas Karlman , Quentin Schulz Subject: [PATCH v2] clk: rockchip: rk3588: Set SPLL frequency during SPL stage Date: Wed, 22 May 2024 19:31:29 +0200 Message-Id: <20240522173129.1053395-1-heiko@sntech.de> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.8 at phobos.denx.de X-Virus-Status: Clean From: Heiko Stuebner All parts expect the SPLL to run at 702MHz. In U-Boot it's the SPLL_HZ declaring this rate and in the kernel it's a fixed clock definition. While everything is expecting 702MHz, the SPLL is not running that frequency when coming from the bootrom though, instead it's running at 351MHz and the vendor-u-boot just sets it to the expected frequency. The SPLL itself is located inside the secure-BUSCRU and in theory accessible as an SCMI clock, though this requires an unknown amount of cooperation from trusted-firmware to set at a later stage, though during the SPL stage we can still access the relevant CRU directly. The SPLL is for example necessary for the DSI controllers to produce output. As the SPLL is "just" another rk3588 pll, just set the desired rate directly during the SPL stage. Tested on rk3588-rock5b and rk3588-tiger by reading back the PLL rate and also observing working DSI output with this change. Fixes: 6737771600d4 ("rockchip: rk3588: Add support for sdmmc clocks in SPL") Suggested-by: Andy Yan Signed-off-by: Heiko Stuebner Cc: Jonas Karlman Cc: Quentin Schulz Reviewed-by: Kever Yang --- changes in v2: - use correct name for SBUSCRU - use dedicated constants for SBUSCRU registers - add comment to make it explicit that the SPLL is in a different CRU .../include/asm/arch-rockchip/cru_rk3588.h | 4 +++ drivers/clk/rockchip/clk_rk3588.c | 30 +++++++++++++++++-- 2 files changed, 31 insertions(+), 3 deletions(-) diff --git a/arch/arm/include/asm/arch-rockchip/cru_rk3588.h b/arch/arm/include/asm/arch-rockchip/cru_rk3588.h index a4507e5fdd7..a0e54d39654 100644 --- a/arch/arm/include/asm/arch-rockchip/cru_rk3588.h +++ b/arch/arm/include/asm/arch-rockchip/cru_rk3588.h @@ -29,6 +29,7 @@ enum rk3588_pll_id { V0PLL, AUPLL, PPLL, + SPLL, PLL_COUNT, }; @@ -150,6 +151,9 @@ struct pll_rate_table { #define RK3588_DSU_CLKGATE_CON(x) ((x) * 0x4 + RK3588_DSU_CRU_BASE + 0x800) #define RK3588_DSU_SOFTRST_CON(x) ((x) * 0x4 + RK3588_DSU_CRU_BASE + 0xa00) +#define RK3588_SBUSCRU_SPLL_CON(x) ((x) * 0x4 + 0x220) +#define RK3588_SBUSCRU_MODE_CON0 0x280 + enum { /* CRU_CLK_SEL8_CON */ ACLK_LOW_TOP_ROOT_SRC_SEL_SHIFT = 14, diff --git a/drivers/clk/rockchip/clk_rk3588.c b/drivers/clk/rockchip/clk_rk3588.c index 4c611a39049..c41c9be6aa3 100644 --- a/drivers/clk/rockchip/clk_rk3588.c +++ b/drivers/clk/rockchip/clk_rk3588.c @@ -37,6 +37,7 @@ static struct rockchip_pll_rate_table rk3588_pll_rates[] = { RK3588_PLL_RATE(786000000, 1, 131, 2, 0), RK3588_PLL_RATE(742500000, 4, 495, 2, 0), RK3588_PLL_RATE(722534400, 8, 963, 2, 24850), + RK3588_PLL_RATE(702000000, 3, 351, 2, 0), RK3588_PLL_RATE(600000000, 2, 200, 2, 0), RK3588_PLL_RATE(594000000, 2, 198, 2, 0), RK3588_PLL_RATE(200000000, 3, 400, 4, 0), @@ -65,6 +66,15 @@ static struct rockchip_pll_clock rk3588_pll_clks[] = { RK3588_MODE_CON0, 0, 15, 0, rk3588_pll_rates), [PPLL] = PLL(pll_rk3588, PLL_PPLL, RK3588_PMU_PLL_CON(128), RK3588_MODE_CON0, 10, 15, 0, rk3588_pll_rates), +#ifdef CONFIG_SPL_BUILD + /* + * The SPLL is part of the SBUSCRU, not the main CRU and as + * such only directly accessible during the SPL stage. + */ + [SPLL] = PLL(pll_rk3588, 0, RK3588_SBUSCRU_SPLL_CON(0), + RK3588_SBUSCRU_MODE_CON0, 0, 15, 0, rk3588_pll_rates), +#endif + }; #ifndef CONFIG_SPL_BUILD @@ -2044,6 +2054,7 @@ U_BOOT_DRIVER(rockchip_rk3588_cru) = { #ifdef CONFIG_SPL_BUILD #define SCRU_BASE 0xfd7d0000 +#define SBUSCRU_BASE 0xfd7d8000 static ulong rk3588_scru_clk_get_rate(struct clk *clk) { @@ -2118,15 +2129,28 @@ static ulong rk3588_scru_clk_set_rate(struct clk *clk, ulong rate) return rk3588_scru_clk_get_rate(clk); } +static int rk3588_scru_clk_probe(struct udevice *dev) +{ + int ret; + + ret = rockchip_pll_set_rate(&rk3588_pll_clks[SPLL], + (void *)SBUSCRU_BASE, SPLL, SPLL_HZ); + if (ret) + debug("%s setting spll rate failed %d\n", __func__, ret); + + return 0; +} + static const struct clk_ops rk3588_scru_clk_ops = { .get_rate = rk3588_scru_clk_get_rate, .set_rate = rk3588_scru_clk_set_rate, }; U_BOOT_DRIVER(rockchip_rk3588_scru) = { - .name = "rockchip_rk3588_scru", - .id = UCLASS_CLK, - .ops = &rk3588_scru_clk_ops, + .name = "rockchip_rk3588_scru", + .id = UCLASS_CLK, + .ops = &rk3588_scru_clk_ops, + .probe = rk3588_scru_clk_probe, }; static int rk3588_scmi_spl_glue_bind(struct udevice *dev)