From patchwork Thu Jun 6 07:28:21 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Horman X-Patchwork-Id: 2677511 Return-Path: X-Original-To: patchwork-linux-sh@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id 5CD7ADF23A for ; Thu, 6 Jun 2013 07:28:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757439Ab3FFH2q (ORCPT ); Thu, 6 Jun 2013 03:28:46 -0400 Received: from kirsty.vergenet.net ([202.4.237.240]:59362 "EHLO kirsty.vergenet.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757198Ab3FFH2n (ORCPT ); Thu, 6 Jun 2013 03:28:43 -0400 Received: from ayumi.isobedori.kobe.vergenet.net (p5212-ipbfp1903kobeminato.hyogo.ocn.ne.jp [114.172.132.212]) by kirsty.vergenet.net (Postfix) with ESMTP id EE34E25C04C; Thu, 6 Jun 2013 17:28:41 +1000 (EST) Received: by ayumi.isobedori.kobe.vergenet.net (Postfix, from userid 7100) id E6CA46CE2AF; Thu, 6 Jun 2013 16:28:39 +0900 (JST) From: Simon Horman To: Arnd Bergmann , Olof Johansson Cc: linux-sh@vger.kernel.org, arm@kernel.org, linux-arm-kernel@lists.infradead.org, Magnus Damm , Kuninori Morimoto , Simon Horman Subject: [PATCH 08/23] ARM: shmobile: r8a73a4: add div6 clocks Date: Thu, 6 Jun 2013 16:28:21 +0900 Message-Id: <1370503716-31155-9-git-send-email-horms+renesas@verge.net.au> X-Mailer: git-send-email 1.8.2.1 In-Reply-To: <1370503716-31155-1-git-send-email-horms+renesas@verge.net.au> References: <1370503716-31155-1-git-send-email-horms+renesas@verge.net.au> Sender: linux-sh-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org From: Kuninori Morimoto DIV6 clocks control each core clocks. Signed-off-by: Kuninori Morimoto Signed-off-by: Simon Horman --- arch/arm/mach-shmobile/clock-r8a73a4.c | 182 +++++++++++++++++++++++++++++---- 1 file changed, 163 insertions(+), 19 deletions(-) diff --git a/arch/arm/mach-shmobile/clock-r8a73a4.c b/arch/arm/mach-shmobile/clock-r8a73a4.c index 147314a..f6227bb 100644 --- a/arch/arm/mach-shmobile/clock-r8a73a4.c +++ b/arch/arm/mach-shmobile/clock-r8a73a4.c @@ -28,19 +28,34 @@ #define CPG_BASE 0xe6150000 #define CPG_LEN 0x270 -#define MPCKCR 0xe6150080 #define SMSTPCR2 0xe6150138 #define SMSTPCR5 0xe6150144 #define FRQCRA 0xE6150000 #define FRQCRB 0xE6150004 -#define CKSCR 0xE61500C0 +#define VCLKCR1 0xE6150008 +#define VCLKCR2 0xE615000C +#define VCLKCR3 0xE615001C +#define VCLKCR4 0xE6150014 +#define VCLKCR5 0xE6150034 +#define ZBCKCR 0xE6150010 +#define SD0CKCR 0xE6150074 +#define SD1CKCR 0xE6150078 +#define SD2CKCR 0xE615007C +#define MMC0CKCR 0xE6150240 +#define MMC1CKCR 0xE6150244 +#define FSIACKCR 0xE6150018 +#define FSIBCKCR 0xE6150090 +#define MPCKCR 0xe6150080 +#define SPUVCKCR 0xE6150094 +#define HSICKCR 0xE615026C +#define M4CKCR 0xE6150098 #define PLLECR 0xE61500D0 #define PLL1CR 0xE6150028 #define PLL2CR 0xE615002C #define PLL2SCR 0xE61501F4 #define PLL2HCR 0xE61501E4 - +#define CKSCR 0xE61500C0 #define CPG_MAP(o) ((o - CPG_BASE) + cpg_mapping.base) @@ -81,6 +96,13 @@ SH_FIXED_RATIO_CLK(extal1_div2_clk, extal1_clk, div2); SH_FIXED_RATIO_CLK(extal2_div2_clk, extal2_clk, div2); SH_FIXED_RATIO_CLK(extal2_div4_clk, extal2_clk, div4); +/* External FSIACK/FSIBCK clock */ +static struct clk fsiack_clk = { +}; + +static struct clk fsibck_clk = { +}; + /* * PLL clocks */ @@ -170,6 +192,8 @@ static struct clk *main_clks[] = { &extal2_div4_clk, &main_clk, &main_div2_clk, + &fsiack_clk, + &fsibck_clk, &pll1_clk, &pll1_div2_clk, &pll2_clk, @@ -216,6 +240,111 @@ static struct clk div4_clks[DIV4_NR] = { [DIV4_HP] = SH_CLK_DIV4(&pll1_clk, FRQCRB, 4, 0x0dff, 0), }; +enum { + DIV6_ZB, + DIV6_SDHI0, DIV6_SDHI1, DIV6_SDHI2, + DIV6_MMC0, DIV6_MMC1, + DIV6_VCK1, DIV6_VCK2, DIV6_VCK3, DIV6_VCK4, DIV6_VCK5, + DIV6_FSIA, DIV6_FSIB, + DIV6_MP, DIV6_M4, DIV6_HSI, DIV6_SPUV, + DIV6_NR }; + +static struct clk *div6_parents[8] = { + [0] = &pll1_div2_clk, + [1] = &pll2s_clk, + [3] = &extal2_clk, + [4] = &main_div2_clk, + [6] = &extalr_clk, +}; + +static struct clk *fsia_parents[4] = { + [0] = &pll1_div2_clk, + [1] = &pll2s_clk, + [2] = &fsiack_clk, +}; + +static struct clk *fsib_parents[4] = { + [0] = &pll1_div2_clk, + [1] = &pll2s_clk, + [2] = &fsibck_clk, +}; + +static struct clk *mp_parents[4] = { + [0] = &pll1_div2_clk, + [1] = &pll2s_clk, + [2] = &extal2_clk, + [3] = &extal2_clk, +}; + +static struct clk *m4_parents[2] = { + [0] = &pll2s_clk, +}; + +static struct clk *hsi_parents[4] = { + [0] = &pll2h_clk, + [1] = &pll1_div2_clk, + [3] = &pll2s_clk, +}; + +/*** FIXME *** + * SH_CLK_DIV6_EXT() macro doesn't care .mapping + * but, it is necessary on R-Car (= ioremap() base CPG) + * The difference between + * SH_CLK_DIV6_EXT() <--> SH_CLK_MAP_DIV6_EXT() + * is only .mapping + */ +#define SH_CLK_MAP_DIV6_EXT(_reg, _flags, _parents, \ + _num_parents, _src_shift, _src_width) \ +{ \ + .enable_reg = (void __iomem *)_reg, \ + .enable_bit = 0, /* unused */ \ + .flags = _flags | CLK_MASK_DIV_ON_DISABLE, \ + .div_mask = SH_CLK_DIV6_MSK, \ + .parent_table = _parents, \ + .parent_num = _num_parents, \ + .src_shift = _src_shift, \ + .src_width = _src_width, \ + .mapping = &cpg_mapping, \ +} + +static struct clk div6_clks[DIV6_NR] = { + [DIV6_ZB] = SH_CLK_MAP_DIV6_EXT(ZBCKCR, CLK_ENABLE_ON_INIT, + div6_parents, 2, 7, 1), + [DIV6_SDHI0] = SH_CLK_MAP_DIV6_EXT(SD0CKCR, 0, + div6_parents, 2, 6, 2), + [DIV6_SDHI1] = SH_CLK_MAP_DIV6_EXT(SD1CKCR, 0, + div6_parents, 2, 6, 2), + [DIV6_SDHI2] = SH_CLK_MAP_DIV6_EXT(SD2CKCR, 0, + div6_parents, 2, 6, 2), + [DIV6_MMC0] = SH_CLK_MAP_DIV6_EXT(MMC0CKCR, 0, + div6_parents, 2, 6, 2), + [DIV6_MMC1] = SH_CLK_MAP_DIV6_EXT(MMC1CKCR, 0, + div6_parents, 2, 6, 2), + [DIV6_VCK1] = SH_CLK_MAP_DIV6_EXT(VCLKCR1, 0, /* didn't care bit[6-7] */ + div6_parents, ARRAY_SIZE(div6_parents), 12, 3), + [DIV6_VCK2] = SH_CLK_MAP_DIV6_EXT(VCLKCR2, 0, /* didn't care bit[6-7] */ + div6_parents, ARRAY_SIZE(div6_parents), 12, 3), + [DIV6_VCK3] = SH_CLK_MAP_DIV6_EXT(VCLKCR3, 0, /* didn't care bit[6-7] */ + div6_parents, ARRAY_SIZE(div6_parents), 12, 3), + [DIV6_VCK4] = SH_CLK_MAP_DIV6_EXT(VCLKCR4, 0, /* didn't care bit[6-7] */ + div6_parents, ARRAY_SIZE(div6_parents), 12, 3), + [DIV6_VCK5] = SH_CLK_MAP_DIV6_EXT(VCLKCR5, 0, /* didn't care bit[6-7] */ + div6_parents, ARRAY_SIZE(div6_parents), 12, 3), + [DIV6_FSIA] = SH_CLK_MAP_DIV6_EXT(FSIACKCR, 0, + fsia_parents, ARRAY_SIZE(fsia_parents), 6, 2), + [DIV6_FSIB] = SH_CLK_MAP_DIV6_EXT(FSIBCKCR, 0, + fsib_parents, ARRAY_SIZE(fsib_parents), 6, 2), + [DIV6_MP] = SH_CLK_MAP_DIV6_EXT(MPCKCR, 0, /* it needs bit[9-11] control */ + mp_parents, ARRAY_SIZE(mp_parents), 6, 2), + /* pll2s will be selected always for M4 */ + [DIV6_M4] = SH_CLK_MAP_DIV6_EXT(M4CKCR, 0, /* it needs bit[9] control */ + m4_parents, ARRAY_SIZE(m4_parents), 6, 1), + [DIV6_HSI] = SH_CLK_MAP_DIV6_EXT(HSICKCR, 0, /* it needs bit[9] control */ + hsi_parents, ARRAY_SIZE(hsi_parents), 6, 2), + [DIV6_SPUV] = SH_CLK_MAP_DIV6_EXT(SPUVCKCR, 0, + mp_parents, ARRAY_SIZE(mp_parents), 6, 2), +}; + /* MSTP */ enum { MSTP217, MSTP216, MSTP207, MSTP206, MSTP204, MSTP203, @@ -224,12 +353,12 @@ enum { }; static struct clk mstp_clks[MSTP_NR] = { - [MSTP204] = SH_CLK_MSTP32(&extal2_clk, SMSTPCR2, 4, 0), /* SCIFA0 */ - [MSTP203] = SH_CLK_MSTP32(&extal2_clk, SMSTPCR2, 3, 0), /* SCIFA1 */ - [MSTP206] = SH_CLK_MSTP32(&extal2_clk, SMSTPCR2, 6, 0), /* SCIFB0 */ - [MSTP207] = SH_CLK_MSTP32(&extal2_clk, SMSTPCR2, 7, 0), /* SCIFB1 */ - [MSTP216] = SH_CLK_MSTP32(&extal2_clk, SMSTPCR2, 16, 0), /* SCIFB2 */ - [MSTP217] = SH_CLK_MSTP32(&extal2_clk, SMSTPCR2, 17, 0), /* SCIFB3 */ + [MSTP204] = SH_CLK_MSTP32(&div6_clks[DIV6_MP], SMSTPCR2, 4, 0), /* SCIFA0 */ + [MSTP203] = SH_CLK_MSTP32(&div6_clks[DIV6_MP], SMSTPCR2, 3, 0), /* SCIFA1 */ + [MSTP206] = SH_CLK_MSTP32(&div6_clks[DIV6_MP], SMSTPCR2, 6, 0), /* SCIFB0 */ + [MSTP207] = SH_CLK_MSTP32(&div6_clks[DIV6_MP], SMSTPCR2, 7, 0), /* SCIFB1 */ + [MSTP216] = SH_CLK_MSTP32(&div6_clks[DIV6_MP], SMSTPCR2, 16, 0), /* SCIFB2 */ + [MSTP217] = SH_CLK_MSTP32(&div6_clks[DIV6_MP], SMSTPCR2, 17, 0), /* SCIFB3 */ [MSTP522] = SH_CLK_MSTP32(&extal2_clk, SMSTPCR5, 22, 0), /* Thermal */ }; @@ -240,6 +369,8 @@ static struct clk_lookup lookups[] = { CLKDEV_CON_ID("extal2", &extal2_clk), CLKDEV_CON_ID("extal2_div2", &extal2_div2_clk), CLKDEV_CON_ID("extal2_div4", &extal2_div4_clk), + CLKDEV_CON_ID("fsiack", &fsiack_clk), + CLKDEV_CON_ID("fsibck", &fsibck_clk), /* pll clock */ CLKDEV_CON_ID("pll1", &pll1_clk), @@ -248,6 +379,25 @@ static struct clk_lookup lookups[] = { CLKDEV_CON_ID("pll2s", &pll2s_clk), CLKDEV_CON_ID("pll2h", &pll2h_clk), + /* DIV6 */ + CLKDEV_CON_ID("zb", &div6_clks[DIV6_ZB]), + CLKDEV_CON_ID("sdhi0", &div6_clks[DIV6_SDHI0]), + CLKDEV_CON_ID("sdhi1", &div6_clks[DIV6_SDHI1]), + CLKDEV_CON_ID("sdhi2", &div6_clks[DIV6_SDHI2]), + CLKDEV_CON_ID("mmc0", &div6_clks[DIV6_MMC0]), + CLKDEV_CON_ID("mmc1", &div6_clks[DIV6_MMC1]), + CLKDEV_CON_ID("vck1", &div6_clks[DIV6_VCK1]), + CLKDEV_CON_ID("vck2", &div6_clks[DIV6_VCK2]), + CLKDEV_CON_ID("vck3", &div6_clks[DIV6_VCK3]), + CLKDEV_CON_ID("vck4", &div6_clks[DIV6_VCK4]), + CLKDEV_CON_ID("vck5", &div6_clks[DIV6_VCK5]), + CLKDEV_CON_ID("fsia", &div6_clks[DIV6_FSIA]), + CLKDEV_CON_ID("fsib", &div6_clks[DIV6_FSIB]), + CLKDEV_CON_ID("mp", &div6_clks[DIV6_MP]), + CLKDEV_CON_ID("m4", &div6_clks[DIV6_M4]), + CLKDEV_CON_ID("hsi", &div6_clks[DIV6_HSI]), + CLKDEV_CON_ID("spuv", &div6_clks[DIV6_SPUV]), + /* MSTP */ CLKDEV_DEV_ID("sh-sci.0", &mstp_clks[MSTP204]), CLKDEV_DEV_ID("sh-sci.1", &mstp_clks[MSTP203]), @@ -263,19 +413,10 @@ static struct clk_lookup lookups[] = { void __init r8a73a4_clock_init(void) { - void __iomem *cpg_base, *reg; + void __iomem *reg; int k, ret = 0; u32 ckscr; - /* fix MPCLK to EXTAL2 for now. - * this is needed until more detailed clock topology is supported - */ - cpg_base = ioremap_nocache(CPG_BASE, CPG_LEN); - BUG_ON(!cpg_base); - reg = cpg_base + (MPCKCR - CPG_BASE); - iowrite32(ioread32(reg) | 1 << 7 | 0x0c, reg); /* set CKSEL */ - iounmap(cpg_base); - reg = ioremap_nocache(CKSCR, PAGE_SIZE); BUG_ON(!reg); ckscr = ioread32(reg); @@ -303,6 +444,9 @@ void __init r8a73a4_clock_init(void) ret = sh_clk_div4_register(div4_clks, DIV4_NR, &div4_table); if (!ret) + ret = sh_clk_div6_reparent_register(div6_clks, DIV6_NR); + + if (!ret) ret = sh_clk_mstp_register(mstp_clks, MSTP_NR); clkdev_add_table(lookups, ARRAY_SIZE(lookups));