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author | Sascha Hauer <s.hauer@pengutronix.de> | 2014-02-05 14:35:20 +0100 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2014-02-10 17:06:36 +0100 |
commit | ef08a80de89f897ed38336e5223cac43dbc697d6 (patch) | |
tree | e66cae25677172f1a7a586e8a534f8ef8f2e2bde | |
parent | 9c08524f8ae37951b16451a50b149e7bb2577f51 (diff) | |
download | barebox-ef08a80de89f897ed38336e5223cac43dbc697d6.tar.gz barebox-ef08a80de89f897ed38336e5223cac43dbc697d6.tar.xz |
ARM: i.MX25: Fix LCDC clocks
- Make sure the LCDC ipg clock is turned off during startup
- register all LCDC clocks (ahb, ipg, per) and pass them to driver
This is necessary because the LCDC doesn't have an enable bit. It just
starts working once the clocks are turned on. If the registers have
invalid values at that time the controller goes into some error state.
So we have to make sure the clocks are turned off during startup and
only turned on in the driver.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
-rw-r--r-- | arch/arm/mach-imx/clk-imx25.c | 27 |
1 files changed, 21 insertions, 6 deletions
diff --git a/arch/arm/mach-imx/clk-imx25.c b/arch/arm/mach-imx/clk-imx25.c index 4d8631cb01..1114ad2774 100644 --- a/arch/arm/mach-imx/clk-imx25.c +++ b/arch/arm/mach-imx/clk-imx25.c @@ -55,7 +55,20 @@ enum mx25_clks { per7_sel, per8_sel, per9_sel, per10_sel, per11_sel, per12_sel, per13_sel, per14_sel, per15_sel, per0, per1, per2, per3, per4, per5, per6, per7, per8, per9, per10, per11, per12, per13, per14, per15, - lcdc_per_gate, clk_max + csi_ipg_per, epit_ipg_per, esai_ipg_per, esdhc1_ipg_per, esdhc2_ipg_per, + gpt_ipg_per, i2c_ipg_per, lcdc_ipg_per, nfc_ipg_per, owire_ipg_per, + pwm_ipg_per, sim1_ipg_per, sim2_ipg_per, ssi1_ipg_per, ssi2_ipg_per, + uart_ipg_per, ata_ahb, reserved1, csi_ahb, emi_ahb, esai_ahb, esdhc1_ahb, + esdhc2_ahb, fec_ahb, lcdc_ahb, rtic_ahb, sdma_ahb, slcdc_ahb, usbotg_ahb, + reserved2, reserved3, reserved4, reserved5, can1_ipg, can2_ipg, csi_ipg, + cspi1_ipg, cspi2_ipg, cspi3_ipg, dryice_ipg, ect_ipg, epit1_ipg, epit2_ipg, + reserved6, esdhc1_ipg, esdhc2_ipg, fec_ipg, reserved7, reserved8, reserved9, + gpt1_ipg, gpt2_ipg, gpt3_ipg, gpt4_ipg, reserved10, reserved11, reserved12, + iim_ipg, reserved13, reserved14, kpp_ipg, lcdc_ipg, reserved15, pwm1_ipg, + pwm2_ipg, pwm3_ipg, pwm4_ipg, rngb_ipg, reserved16, scc_ipg, sdma_ipg, + sim1_ipg, sim2_ipg, slcdc_ipg, spba_ipg, ssi1_ipg, ssi2_ipg, tsc_ipg, + uart1_ipg, uart2_ipg, uart3_ipg, uart4_ipg, uart5_ipg, reserved17, + wdt_ipg, clk_max }; static struct clk *clks[clk_max]; @@ -83,7 +96,7 @@ static int imx25_ccm_probe(struct device_d *dev) writel((1 << 5) | (1 << 6) | (1 << 7) | (1 << 8) | (1 << 13) | (1 << 14) | (1 << 15) | (1 << 19) | (1 << 20) | (1 << 21) | (1 << 22) | - (1 << 26) | (1 << 29) | (1 << 31), + (1 << 26) | (1 << 31), base + CCM_CGCR1); writel((1 << 0) | (1 << 1) | (1 << 2) | (1 << 10) | (1 << 13) | (1 << 14) | @@ -132,7 +145,9 @@ static int imx25_ccm_probe(struct device_d *dev) clks[per13] = imx_clk_divider("per13", "per13_sel", base + CCM_PCDR3, 8, 6); clks[per14] = imx_clk_divider("per14", "per14_sel", base + CCM_PCDR3, 16, 6); clks[per15] = imx_clk_divider("per15", "per15_sel", base + CCM_PCDR3, 24, 6); - clks[lcdc_per_gate] = imx_clk_gate("lcdc_per_gate", "per7", base + CCM_CGCR0, 7); + clks[lcdc_ahb] = imx_clk_gate("lcdc_ahb", "ahb", base + CCM_CGCR0, 24); + clks[lcdc_ipg] = imx_clk_gate("lcdc_ipg", "ipg", base + CCM_CGCR1, 29); + clks[lcdc_ipg_per] = imx_clk_gate("lcdc_ipg_per", "per7", base + CCM_CGCR0, 7); clkdev_add_physbase(clks[per15], MX25_UART1_BASE_ADDR, NULL); clkdev_add_physbase(clks[per15], MX25_UART2_BASE_ADDR, NULL); @@ -152,9 +167,9 @@ static int imx25_ccm_probe(struct device_d *dev) clkdev_add_physbase(clks[ipg], MX25_CSPI3_BASE_ADDR, NULL); clkdev_add_physbase(clks[per3], MX25_ESDHC1_BASE_ADDR, NULL); clkdev_add_physbase(clks[per4], MX25_ESDHC2_BASE_ADDR, NULL); - clkdev_add_physbase(clks[lcdc_per_gate], MX25_LCDC_BASE_ADDR, NULL); - clkdev_add_physbase(clks[dummy], MX25_LCDC_BASE_ADDR, "ipg"); - clkdev_add_physbase(clks[dummy], MX25_LCDC_BASE_ADDR, "ahb"); + clkdev_add_physbase(clks[lcdc_ipg_per], MX25_LCDC_BASE_ADDR, "per"); + clkdev_add_physbase(clks[lcdc_ipg], MX25_LCDC_BASE_ADDR, "ipg"); + clkdev_add_physbase(clks[lcdc_ahb], MX25_LCDC_BASE_ADDR, "ahb"); return 0; } |