From patchwork Wed May 3 11:28:26 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lokesh Vutla X-Patchwork-Id: 757968 X-Patchwork-Delegate: trini@ti.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.denx.de (dione.denx.de [81.169.180.215]) by ozlabs.org (Postfix) with ESMTP id 3wHwxK19Klz9rxm for ; Wed, 3 May 2017 21:32:21 +1000 (AEST) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=ti.com header.i=@ti.com header.b="tilIfnH6"; dkim-atps=neutral Received: by lists.denx.de (Postfix, from userid 105) id CDEFAC21C61; Wed, 3 May 2017 11:31:53 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lists.denx.de X-Spam-Level: X-Spam-Status: No, score=0.0 required=5.0 tests=T_DKIM_INVALID autolearn=unavailable autolearn_force=no version=3.4.0 Received: from lists.denx.de (localhost [IPv6:::1]) by lists.denx.de (Postfix) with ESMTP id B9AD9C21C4D; Wed, 3 May 2017 11:31:19 +0000 (UTC) Received: by lists.denx.de (Postfix, from userid 105) id 148B7C21C8F; Wed, 3 May 2017 11:31:12 +0000 (UTC) Received: from lelnx194.ext.ti.com (lelnx194.ext.ti.com [198.47.27.80]) by lists.denx.de (Postfix) with ESMTPS id 10DCCC21C5A for ; Wed, 3 May 2017 11:31:08 +0000 (UTC) Received: from dflxv15.itg.ti.com ([128.247.5.124]) by lelnx194.ext.ti.com (8.15.1/8.15.1) with ESMTP id v43BV7bj028004; Wed, 3 May 2017 06:31:07 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ti.com; s=ti-com-17Q1; t=1493811067; bh=5szHPECT0Zvnr0f82wlocJjjYsdlYHkeGWJJU/f3k3w=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=tilIfnH6AwGwHqQhaKIK879zLiCepRsQ0dAhtexwL8noCvyaJos/rRhY7tqhEHtOo YQAJl8EFFF9WZ2Xg59L/2GPx5JQOywUKWugyKsty5QESMaStiJ9ofrvBzJhpJ7oRht oyFX//0vMsdzTbVnz03MpUWnx+uC4CExqegamaXU= Received: from DFLE72.ent.ti.com (dfle72.ent.ti.com [128.247.5.109]) by dflxv15.itg.ti.com (8.14.3/8.13.8) with ESMTP id v43BV78b015312; Wed, 3 May 2017 06:31:07 -0500 Received: from dlep33.itg.ti.com (157.170.170.75) by DFLE72.ent.ti.com (128.247.5.109) with Microsoft SMTP Server id 14.3.294.0; Wed, 3 May 2017 06:31:06 -0500 Received: from a0131933.india.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dlep33.itg.ti.com (8.14.3/8.13.8) with ESMTP id v43BUxcU013356; Wed, 3 May 2017 06:31:05 -0500 From: Lokesh Vutla To: Tom Rini , Date: Wed, 3 May 2017 16:58:26 +0530 Message-ID: <20170503112826.24616-3-lokeshvutla@ti.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170503112826.24616-1-lokeshvutla@ti.com> References: <20170503112826.24616-1-lokeshvutla@ti.com> MIME-Version: 1.0 Cc: Tero Kristo , Franklin S Cooper Jr Subject: [U-Boot] [PATCH 2/2] ARM: keystone2: Add support for getting external clock dynamically X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.18 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" One some keystone2 platforms like K2G ICE, there is an option to switch between 24MHz or 25MHz as sysclk. But the existing driver assumes it is always 24MHz. Add support for getting all reference clocks dynamically by reading boot pins. Signed-off-by: Lokesh Vutla Reviewed-by: Tom Rini --- arch/arm/mach-keystone/clock.c | 12 +++++----- arch/arm/mach-keystone/include/mach/clock.h | 2 +- board/ti/ks2_evm/board_k2e.c | 30 +++++++++++++++++++----- board/ti/ks2_evm/board_k2g.c | 36 ++++++++++++++++++++++------- board/ti/ks2_evm/board_k2hk.c | 31 +++++++++++++++++++++++++ board/ti/ks2_evm/board_k2l.c | 34 +++++++++++++++++++++------ include/configs/ti_armv7_keystone2.h | 2 +- 7 files changed, 118 insertions(+), 29 deletions(-) diff --git a/arch/arm/mach-keystone/clock.c b/arch/arm/mach-keystone/clock.c index 68f898036f..645bd9629e 100644 --- a/arch/arm/mach-keystone/clock.c +++ b/arch/arm/mach-keystone/clock.c @@ -284,7 +284,7 @@ static unsigned long pll_freq_get(int pll) u32 tmp, reg; if (pll == MAIN_PLL) { - ret = external_clk[sys_clk]; + ret = get_external_clk(sys_clk); if (pllctl_reg_read(pll, ctl) & PLLCTL_PLLEN_MASK) { /* PLL mode */ tmp = __raw_readl(KS2_MAINPLLCTL0); @@ -302,23 +302,23 @@ static unsigned long pll_freq_get(int pll) } else { switch (pll) { case PASS_PLL: - ret = external_clk[pa_clk]; + ret = get_external_clk(pa_clk); reg = KS2_PASSPLLCTL0; break; case TETRIS_PLL: - ret = external_clk[tetris_clk]; + ret = get_external_clk(tetris_clk); reg = KS2_ARMPLLCTL0; break; case DDR3A_PLL: - ret = external_clk[ddr3a_clk]; + ret = get_external_clk(ddr3a_clk); reg = KS2_DDR3APLLCTL0; break; case DDR3B_PLL: - ret = external_clk[ddr3b_clk]; + ret = get_external_clk(ddr3b_clk); reg = KS2_DDR3BPLLCTL0; break; case UART_PLL: - ret = external_clk[uart_clk]; + ret = get_external_clk(uart_clk); reg = KS2_UARTPLLCTL0; break; default: diff --git a/arch/arm/mach-keystone/include/mach/clock.h b/arch/arm/mach-keystone/include/mach/clock.h index 0d8a9444de..006d0744d1 100644 --- a/arch/arm/mach-keystone/include/mach/clock.h +++ b/arch/arm/mach-keystone/include/mach/clock.h @@ -117,7 +117,6 @@ struct pll_init_data { int pll_od; /* PLL output divider */ }; -extern unsigned int external_clk[ext_clk_count]; extern const struct keystone_pll_regs keystone_pll_regs[]; extern s16 divn_val[]; extern int speeds[]; @@ -129,6 +128,7 @@ unsigned long ks_clk_get_rate(unsigned int clk); int get_max_dev_speed(int *spds); int get_max_arm_speed(int *spds); void pll_pa_clk_sel(void); +unsigned int get_external_clk(u32 clk); #endif #endif diff --git a/board/ti/ks2_evm/board_k2e.c b/board/ti/ks2_evm/board_k2e.c index 4bbcf2df4e..266a66b678 100644 --- a/board/ti/ks2_evm/board_k2e.c +++ b/board/ti/ks2_evm/board_k2e.c @@ -14,12 +14,30 @@ DECLARE_GLOBAL_DATA_PTR; -unsigned int external_clk[ext_clk_count] = { - [sys_clk] = 100000000, - [alt_core_clk] = 100000000, - [pa_clk] = 100000000, - [ddr3a_clk] = 100000000, -}; +unsigned int get_external_clk(u32 clk) +{ + unsigned int clk_freq; + + switch (clk) { + case sys_clk: + clk_freq = 100000000; + break; + case alt_core_clk: + clk_freq = 100000000; + break; + case pa_clk: + clk_freq = 100000000; + break; + case ddr3a_clk: + clk_freq = 100000000; + break; + default: + clk_freq = 0; + break; + } + + return clk_freq; +} static struct pll_init_data core_pll_config[NUM_SPDS] = { [SPD800] = CORE_PLL_800, diff --git a/board/ti/ks2_evm/board_k2g.c b/board/ti/ks2_evm/board_k2g.c index 6c590b4ff9..da21fd6f73 100644 --- a/board/ti/ks2_evm/board_k2g.c +++ b/board/ti/ks2_evm/board_k2g.c @@ -17,7 +17,6 @@ #include "mux-k2g.h" #include "../common/board_detect.h" -#define SYS_CLK 24000000 #define K2G_GP_AUDIO_CODEC_ADDRESS 0x1B const unsigned int sysclk_array[MAX_SYSCLK] = { @@ -27,13 +26,34 @@ const unsigned int sysclk_array[MAX_SYSCLK] = { 26000000, }; -unsigned int external_clk[ext_clk_count] = { - [sys_clk] = SYS_CLK, - [pa_clk] = SYS_CLK, - [tetris_clk] = SYS_CLK, - [ddr3a_clk] = SYS_CLK, - [uart_clk] = SYS_CLK, -}; +unsigned int get_external_clk(u32 clk) +{ + unsigned int clk_freq; + u8 sysclk_index = get_sysclk_index(); + + switch (clk) { + case sys_clk: + clk_freq = sysclk_array[sysclk_index]; + break; + case pa_clk: + clk_freq = sysclk_array[sysclk_index]; + break; + case tetris_clk: + clk_freq = sysclk_array[sysclk_index]; + break; + case ddr3a_clk: + clk_freq = sysclk_array[sysclk_index]; + break; + case uart_clk: + clk_freq = sysclk_array[sysclk_index]; + break; + default: + clk_freq = 0; + break; + } + + return clk_freq; +} static int arm_speeds[DEVSPEED_NUMSPDS] = { SPD400, diff --git a/board/ti/ks2_evm/board_k2hk.c b/board/ti/ks2_evm/board_k2hk.c index 6f2246f39e..c7330996d1 100644 --- a/board/ti/ks2_evm/board_k2hk.c +++ b/board/ti/ks2_evm/board_k2hk.c @@ -23,6 +23,37 @@ unsigned int external_clk[ext_clk_count] = { [ddr3b_clk] = 100000000, }; +unsigned int get_external_clk(u32 clk) +{ + unsigned int clk_freq; + + switch (clk) { + case sys_clk: + clk_freq = 122880000; + break; + case alt_core_clk: + clk_freq = 125000000; + break; + case pa_clk: + clk_freq = 122880000; + break; + case tetris_clk: + clk_freq = 125000000; + break; + case ddr3a_clk: + clk_freq = 100000000; + break; + case ddr3b_clk: + clk_freq = 100000000; + break; + default: + clk_freq = 0; + break; + } + + return clk_freq; +} + static struct pll_init_data core_pll_config[NUM_SPDS] = { [SPD800] = CORE_PLL_799, [SPD1000] = CORE_PLL_999, diff --git a/board/ti/ks2_evm/board_k2l.c b/board/ti/ks2_evm/board_k2l.c index dfd82165f8..166367bfb9 100644 --- a/board/ti/ks2_evm/board_k2l.c +++ b/board/ti/ks2_evm/board_k2l.c @@ -14,13 +14,33 @@ DECLARE_GLOBAL_DATA_PTR; -unsigned int external_clk[ext_clk_count] = { - [sys_clk] = 122880000, - [alt_core_clk] = 100000000, - [pa_clk] = 122880000, - [tetris_clk] = 122880000, - [ddr3a_clk] = 100000000, -}; +unsigned int get_external_clk(u32 clk) +{ + unsigned int clk_freq; + + switch (clk) { + case sys_clk: + clk_freq = 122880000; + break; + case alt_core_clk: + clk_freq = 100000000; + break; + case pa_clk: + clk_freq = 122880000; + break; + case tetris_clk: + clk_freq = 122880000; + break; + case ddr3a_clk: + clk_freq = 100000000; + break; + default: + clk_freq = 0; + break; + } + + return clk_freq; +} static struct pll_init_data core_pll_config[NUM_SPDS] = { [SPD800] = CORE_PLL_799, diff --git a/include/configs/ti_armv7_keystone2.h b/include/configs/ti_armv7_keystone2.h index 5d2a7ab509..868464cd32 100644 --- a/include/configs/ti_armv7_keystone2.h +++ b/include/configs/ti_armv7_keystone2.h @@ -318,7 +318,7 @@ #ifndef CONFIG_SOC_K2G #define CONFIG_SYS_HZ_CLOCK ks_clk_get_rate(KS2_CLK1_6) #else -#define CONFIG_SYS_HZ_CLOCK external_clk[sys_clk] +#define CONFIG_SYS_HZ_CLOCK get_external_clk(sys_clk) #endif #endif /* __CONFIG_KS2_EVM_H */