From 154d62e4cdec9eb9271cf57f9d1f57c79c4f4e18 Mon Sep 17 00:00:00 2001 From: MyungJoo Ham Date: Sat, 26 Jun 2010 17:21:50 +0900 Subject: [PATCH] ARM: S5PV210: Correct clock register properties 1. Corrected shift values of I2S and UART clocks (CLK_GATE_IP3), which were defined incorrectly. 2. Corrected shift values of sclk_audio, uclk1, sclk_fimd, sclk_mmc, sclk_spi, sclk_pwm, which had duplicated .enable/.ctrlbit with their twins defined in struct clk init_clocks_disable[] and struct clk init_clocks[]. We've changed their .enable/.ctrlbit to use CLK_SRC_MASK register to avoid the duplicated clock problem described below. NOTE: Duplicated Clock Problem Please note that each clock definition should access different control register; otherwise, the system may suffer lockups. For example, if we have two clock definitions "a" and "b" which access the same register (and the shift value). Then, when we do: module A clk = clk_get("a"); clk->clk_enable(clk); module B (context switch) clk = clk_get("b"); clk->clk_enable(clk); do something with clk. clk->clk_disable(clk); module A (context switch) do something with clk * At this point, the system may hang. Therefore, there should be no clock definitions with the same contol register/shift. If we need to create "aliases", then, creating child clocks sharing the clock should be fine. 3. Corrected other sclk_* shift values and access registers. Signed-off-by: MyungJoo Ham Signed-off-by: Kyungmin Park [kgene.kim@samsung.com: minor title and message fix] Signed-off-by: Kukjin Kim --- arch/arm/mach-s5pv210/clock.c | 115 ++++++++++++++++++---------------- 1 file changed, 62 insertions(+), 53 deletions(-) diff --git a/arch/arm/mach-s5pv210/clock.c b/arch/arm/mach-s5pv210/clock.c index 154bca4abc0..af91fefef2c 100644 --- a/arch/arm/mach-s5pv210/clock.c +++ b/arch/arm/mach-s5pv210/clock.c @@ -183,6 +183,11 @@ static int s5pv210_clk_mask0_ctrl(struct clk *clk, int enable) return s5p_gatectrl(S5P_CLK_SRC_MASK0, clk, enable); } +static int s5pv210_clk_mask1_ctrl(struct clk *clk, int enable) +{ + return s5p_gatectrl(S5P_CLK_SRC_MASK1, clk, enable); +} + static struct clk clk_sclk_hdmi27m = { .name = "sclk_hdmi27m", .id = -1, @@ -406,14 +411,14 @@ static struct clk init_clocks_disable[] = { .id = 0, .parent = &clk_p, .enable = s5pv210_clk_ip3_ctrl, - .ctrlbit = (1<<4), + .ctrlbit = (1 << 5), }, { .name = "i2s_v32", .id = 1, .parent = &clk_p, .enable = s5pv210_clk_ip3_ctrl, - .ctrlbit = (1<<4), - } + .ctrlbit = (1 << 6), + }, }; static struct clk init_clocks[] = { @@ -429,25 +434,25 @@ static struct clk init_clocks[] = { .id = 0, .parent = &clk_pclk_psys.clk, .enable = s5pv210_clk_ip3_ctrl, - .ctrlbit = (1<<7), + .ctrlbit = (1 << 17), }, { .name = "uart", .id = 1, .parent = &clk_pclk_psys.clk, .enable = s5pv210_clk_ip3_ctrl, - .ctrlbit = (1<<8), + .ctrlbit = (1 << 18), }, { .name = "uart", .id = 2, .parent = &clk_pclk_psys.clk, .enable = s5pv210_clk_ip3_ctrl, - .ctrlbit = (1<<9), + .ctrlbit = (1 << 19), }, { .name = "uart", .id = 3, .parent = &clk_pclk_psys.clk, .enable = s5pv210_clk_ip3_ctrl, - .ctrlbit = (1<<10), + .ctrlbit = (1 << 20), }, }; @@ -497,8 +502,8 @@ static struct clksrc_clk clk_sclk_dac = { .clk = { .name = "sclk_dac", .id = -1, - .ctrlbit = (1 << 10), - .enable = s5pv210_clk_ip1_ctrl, + .enable = s5pv210_clk_mask0_ctrl, + .ctrlbit = (1 << 2), }, .sources = &clkset_sclk_dac, .reg_src = { .reg = S5P_CLK_SRC1, .shift = 8, .size = 1 }, @@ -527,8 +532,8 @@ static struct clksrc_clk clk_sclk_hdmi = { .clk = { .name = "sclk_hdmi", .id = -1, - .enable = s5pv210_clk_ip1_ctrl, - .ctrlbit = (1 << 11), + .enable = s5pv210_clk_mask0_ctrl, + .ctrlbit = (1 << 0), }, .sources = &clkset_sclk_hdmi, .reg_src = { .reg = S5P_CLK_SRC1, .shift = 0, .size = 1 }, @@ -565,8 +570,8 @@ static struct clksrc_clk clk_sclk_audio0 = { .clk = { .name = "sclk_audio", .id = 0, - .enable = s5pv210_clk_ip3_ctrl, - .ctrlbit = (1 << 4), + .enable = s5pv210_clk_mask0_ctrl, + .ctrlbit = (1 << 24), }, .sources = &clkset_sclk_audio0, .reg_src = { .reg = S5P_CLK_SRC6, .shift = 0, .size = 4 }, @@ -594,8 +599,8 @@ static struct clksrc_clk clk_sclk_audio1 = { .clk = { .name = "sclk_audio", .id = 1, - .enable = s5pv210_clk_ip3_ctrl, - .ctrlbit = (1 << 5), + .enable = s5pv210_clk_mask0_ctrl, + .ctrlbit = (1 << 25), }, .sources = &clkset_sclk_audio1, .reg_src = { .reg = S5P_CLK_SRC6, .shift = 4, .size = 4 }, @@ -623,8 +628,8 @@ static struct clksrc_clk clk_sclk_audio2 = { .clk = { .name = "sclk_audio", .id = 2, - .enable = s5pv210_clk_ip3_ctrl, - .ctrlbit = (1 << 6), + .enable = s5pv210_clk_mask0_ctrl, + .ctrlbit = (1 << 26), }, .sources = &clkset_sclk_audio2, .reg_src = { .reg = S5P_CLK_SRC6, .shift = 8, .size = 4 }, @@ -680,8 +685,8 @@ static struct clksrc_clk clksrcs[] = { .clk = { .name = "uclk1", .id = 0, - .ctrlbit = (1<<17), - .enable = s5pv210_clk_ip3_ctrl, + .enable = s5pv210_clk_mask0_ctrl, + .ctrlbit = (1 << 12), }, .sources = &clkset_uart, .reg_src = { .reg = S5P_CLK_SRC4, .shift = 16, .size = 4 }, @@ -690,8 +695,8 @@ static struct clksrc_clk clksrcs[] = { .clk = { .name = "uclk1", .id = 1, - .enable = s5pv210_clk_ip3_ctrl, - .ctrlbit = (1 << 18), + .enable = s5pv210_clk_mask0_ctrl, + .ctrlbit = (1 << 13), }, .sources = &clkset_uart, .reg_src = { .reg = S5P_CLK_SRC4, .shift = 20, .size = 4 }, @@ -700,8 +705,8 @@ static struct clksrc_clk clksrcs[] = { .clk = { .name = "uclk1", .id = 2, - .enable = s5pv210_clk_ip3_ctrl, - .ctrlbit = (1 << 19), + .enable = s5pv210_clk_mask0_ctrl, + .ctrlbit = (1 << 14), }, .sources = &clkset_uart, .reg_src = { .reg = S5P_CLK_SRC4, .shift = 24, .size = 4 }, @@ -710,8 +715,8 @@ static struct clksrc_clk clksrcs[] = { .clk = { .name = "uclk1", .id = 3, - .enable = s5pv210_clk_ip3_ctrl, - .ctrlbit = (1 << 20), + .enable = s5pv210_clk_mask0_ctrl, + .ctrlbit = (1 << 15), }, .sources = &clkset_uart, .reg_src = { .reg = S5P_CLK_SRC4, .shift = 28, .size = 4 }, @@ -720,8 +725,8 @@ static struct clksrc_clk clksrcs[] = { .clk = { .name = "sclk_mixer", .id = -1, - .enable = s5pv210_clk_ip1_ctrl, - .ctrlbit = (1 << 9), + .enable = s5pv210_clk_mask0_ctrl, + .ctrlbit = (1 << 1), }, .sources = &clkset_sclk_mixer, .reg_src = { .reg = S5P_CLK_SRC1, .shift = 4, .size = 1 }, @@ -738,8 +743,8 @@ static struct clksrc_clk clksrcs[] = { .clk = { .name = "sclk_fimc", .id = 0, - .enable = s5pv210_clk_ip0_ctrl, - .ctrlbit = (1 << 24), + .enable = s5pv210_clk_mask1_ctrl, + .ctrlbit = (1 << 2), }, .sources = &clkset_group2, .reg_src = { .reg = S5P_CLK_SRC3, .shift = 12, .size = 4 }, @@ -748,8 +753,8 @@ static struct clksrc_clk clksrcs[] = { .clk = { .name = "sclk_fimc", .id = 1, - .enable = s5pv210_clk_ip0_ctrl, - .ctrlbit = (1 << 25), + .enable = s5pv210_clk_mask1_ctrl, + .ctrlbit = (1 << 3), }, .sources = &clkset_group2, .reg_src = { .reg = S5P_CLK_SRC3, .shift = 16, .size = 4 }, @@ -758,8 +763,8 @@ static struct clksrc_clk clksrcs[] = { .clk = { .name = "sclk_fimc", .id = 2, - .enable = s5pv210_clk_ip0_ctrl, - .ctrlbit = (1 << 26), + .enable = s5pv210_clk_mask1_ctrl, + .ctrlbit = (1 << 4), }, .sources = &clkset_group2, .reg_src = { .reg = S5P_CLK_SRC3, .shift = 20, .size = 4 }, @@ -768,6 +773,8 @@ static struct clksrc_clk clksrcs[] = { .clk = { .name = "sclk_cam", .id = 0, + .enable = s5pv210_clk_mask0_ctrl, + .ctrlbit = (1 << 3), }, .sources = &clkset_group2, .reg_src = { .reg = S5P_CLK_SRC1, .shift = 12, .size = 4 }, @@ -776,6 +783,8 @@ static struct clksrc_clk clksrcs[] = { .clk = { .name = "sclk_cam", .id = 1, + .enable = s5pv210_clk_mask0_ctrl, + .ctrlbit = (1 << 4), }, .sources = &clkset_group2, .reg_src = { .reg = S5P_CLK_SRC1, .shift = 16, .size = 4 }, @@ -784,8 +793,8 @@ static struct clksrc_clk clksrcs[] = { .clk = { .name = "sclk_fimd", .id = -1, - .enable = s5pv210_clk_ip1_ctrl, - .ctrlbit = (1 << 0), + .enable = s5pv210_clk_mask0_ctrl, + .ctrlbit = (1 << 5), }, .sources = &clkset_group2, .reg_src = { .reg = S5P_CLK_SRC1, .shift = 20, .size = 4 }, @@ -794,8 +803,8 @@ static struct clksrc_clk clksrcs[] = { .clk = { .name = "sclk_mmc", .id = 0, - .enable = s5pv210_clk_ip2_ctrl, - .ctrlbit = (1 << 16), + .enable = s5pv210_clk_mask0_ctrl, + .ctrlbit = (1 << 8), }, .sources = &clkset_group2, .reg_src = { .reg = S5P_CLK_SRC4, .shift = 0, .size = 4 }, @@ -804,8 +813,8 @@ static struct clksrc_clk clksrcs[] = { .clk = { .name = "sclk_mmc", .id = 1, - .enable = s5pv210_clk_ip2_ctrl, - .ctrlbit = (1 << 17), + .enable = s5pv210_clk_mask0_ctrl, + .ctrlbit = (1 << 9), }, .sources = &clkset_group2, .reg_src = { .reg = S5P_CLK_SRC4, .shift = 4, .size = 4 }, @@ -814,8 +823,8 @@ static struct clksrc_clk clksrcs[] = { .clk = { .name = "sclk_mmc", .id = 2, - .enable = s5pv210_clk_ip2_ctrl, - .ctrlbit = (1 << 18), + .enable = s5pv210_clk_mask0_ctrl, + .ctrlbit = (1 << 10), }, .sources = &clkset_group2, .reg_src = { .reg = S5P_CLK_SRC4, .shift = 8, .size = 4 }, @@ -824,8 +833,8 @@ static struct clksrc_clk clksrcs[] = { .clk = { .name = "sclk_mmc", .id = 3, - .enable = s5pv210_clk_ip2_ctrl, - .ctrlbit = (1 << 19), + .enable = s5pv210_clk_mask0_ctrl, + .ctrlbit = (1 << 11), }, .sources = &clkset_group2, .reg_src = { .reg = S5P_CLK_SRC4, .shift = 12, .size = 4 }, @@ -864,8 +873,8 @@ static struct clksrc_clk clksrcs[] = { .clk = { .name = "sclk_csis", .id = -1, - .enable = s5pv210_clk_ip0_ctrl, - .ctrlbit = (1 << 31), + .enable = s5pv210_clk_mask0_ctrl, + .ctrlbit = (1 << 6), }, .sources = &clkset_group2, .reg_src = { .reg = S5P_CLK_SRC1, .shift = 24, .size = 4 }, @@ -874,8 +883,8 @@ static struct clksrc_clk clksrcs[] = { .clk = { .name = "sclk_spi", .id = 0, - .enable = s5pv210_clk_ip3_ctrl, - .ctrlbit = (1 << 12), + .enable = s5pv210_clk_mask0_ctrl, + .ctrlbit = (1 << 16), }, .sources = &clkset_group2, .reg_src = { .reg = S5P_CLK_SRC5, .shift = 0, .size = 4 }, @@ -884,8 +893,8 @@ static struct clksrc_clk clksrcs[] = { .clk = { .name = "sclk_spi", .id = 1, - .enable = s5pv210_clk_ip3_ctrl, - .ctrlbit = (1 << 13), + .enable = s5pv210_clk_mask0_ctrl, + .ctrlbit = (1 << 17), }, .sources = &clkset_group2, .reg_src = { .reg = S5P_CLK_SRC5, .shift = 4, .size = 4 }, @@ -894,8 +903,8 @@ static struct clksrc_clk clksrcs[] = { .clk = { .name = "sclk_pwi", .id = -1, - .enable = &s5pv210_clk_ip4_ctrl, - .ctrlbit = (1 << 2), + .enable = s5pv210_clk_mask0_ctrl, + .ctrlbit = (1 << 29), }, .sources = &clkset_group2, .reg_src = { .reg = S5P_CLK_SRC6, .shift = 20, .size = 4 }, @@ -904,8 +913,8 @@ static struct clksrc_clk clksrcs[] = { .clk = { .name = "sclk_pwm", .id = -1, - .enable = s5pv210_clk_ip3_ctrl, - .ctrlbit = (1 << 23), + .enable = s5pv210_clk_mask0_ctrl, + .ctrlbit = (1 << 19), }, .sources = &clkset_group2, .reg_src = { .reg = S5P_CLK_SRC5, .shift = 12, .size = 4 }, -- 2.41.0