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u-boot/arch/arm/mach-omap2/am33xx/clock_am33xx.c

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SPDX: Convert all of our single license tags to Linux Kernel style When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-06 21:58:06 +00:00
// SPDX-License-Identifier: GPL-2.0+
ARM:AM33XX: Add clock definitions This patch adds basic clock definition of am33xx SoC. Signed-off-by: Chandan Nath <chandan.nath@ti.com> Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2011-10-14 02:58:23 +00:00
/*
am33xx: refactor am33xx clocks and add ti814x support Split clock.c for am335x and ti814x and add ti814x specific clock support. Signed-off-by: Matt Porter <mporter@ti.com>
2013-03-15 10:07:04 +00:00
* clock_am33xx.c
ARM:AM33XX: Add clock definitions This patch adds basic clock definition of am33xx SoC. Signed-off-by: Chandan Nath <chandan.nath@ti.com> Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2011-10-14 02:58:23 +00:00
*
* clocks for AM33XX based boards
*
am33xx: refactor am33xx clocks and add ti814x support Split clock.c for am335x and ti814x and add ti814x specific clock support. Signed-off-by: Matt Porter <mporter@ti.com>
2013-03-15 10:07:04 +00:00
* Copyright (C) 2013, Texas Instruments, Incorporated - http://www.ti.com/
ARM:AM33XX: Add clock definitions This patch adds basic clock definition of am33xx SoC. Signed-off-by: Chandan Nath <chandan.nath@ti.com> Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2011-10-14 02:58:23 +00:00
*/
#include <common.h>
#include <asm/arch/cpu.h>
arm: am33xx: Add support for mulitiple PLL input frequencies am335x supports various sysclk frequencies which can be determined using sysboot pins. PLLs should be configures based on this sysclk frequency. Add PLL configurations for all supported frequencies. Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2017-05-05 07:29:10 +00:00
#include <asm/arch/sys_proto.h>
ARM:AM33XX: Add clock definitions This patch adds basic clock definition of am33xx SoC. Signed-off-by: Chandan Nath <chandan.nath@ti.com> Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2011-10-14 02:58:23 +00:00
#include <asm/arch/clock.h>
#include <asm/arch/hardware.h>
#include <asm/io.h>
am33xx: refactor am33xx clocks and add ti814x support Split clock.c for am335x and ti814x and add ti814x specific clock support. Signed-off-by: Matt Porter <mporter@ti.com>
2013-03-15 10:07:04 +00:00
#define OSC (V_OSCK/1000000)
ARM: AM33xx: Cleanup clocks layer Cleaning up the clocks layer. This helps in addition of new Soc with minimal changes. This is derived from OMAP4 boards. Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Tested-by: Heiko Schocher <hs@denx.de> Acked-by: Heiko Schocher <hs@denx.de>
2013-07-30 05:18:53 +00:00
struct cm_perpll *const cmper = (struct cm_perpll *)CM_PER;
struct cm_wkuppll *const cmwkup = (struct cm_wkuppll *)CM_WKUP;
struct cm_dpll *const cmdpll = (struct cm_dpll *)CM_DPLL;
struct cm_rtc *const cmrtc = (struct cm_rtc *)CM_RTC;
ARM:AM33XX: Add clock definitions This patch adds basic clock definition of am33xx SoC. Signed-off-by: Chandan Nath <chandan.nath@ti.com> Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2011-10-14 02:58:23 +00:00
ARM: AM33xx: Cleanup dplls data Locking sequence for all the dplls is same. In the current code same sequence is done repeatedly for each dpll. Instead have a generic function for locking dplls and pass dpll data to that function. This is derived from OMAP4 boards. Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Tested-by: Heiko Schocher <hs@denx.de> Acked-by: Heiko Schocher <hs@denx.de>
2013-07-30 05:18:52 +00:00
const struct dpll_regs dpll_mpu_regs = {
.cm_clkmode_dpll = CM_WKUP + 0x88,
.cm_idlest_dpll = CM_WKUP + 0x20,
.cm_clksel_dpll = CM_WKUP + 0x2C,
.cm_div_m2_dpll = CM_WKUP + 0xA8,
};
const struct dpll_regs dpll_core_regs = {
.cm_clkmode_dpll = CM_WKUP + 0x90,
.cm_idlest_dpll = CM_WKUP + 0x5C,
.cm_clksel_dpll = CM_WKUP + 0x68,
.cm_div_m4_dpll = CM_WKUP + 0x80,
.cm_div_m5_dpll = CM_WKUP + 0x84,
.cm_div_m6_dpll = CM_WKUP + 0xD8,
};
const struct dpll_regs dpll_per_regs = {
.cm_clkmode_dpll = CM_WKUP + 0x8C,
.cm_idlest_dpll = CM_WKUP + 0x70,
.cm_clksel_dpll = CM_WKUP + 0x9C,
.cm_div_m2_dpll = CM_WKUP + 0xAC,
};
const struct dpll_regs dpll_ddr_regs = {
.cm_clkmode_dpll = CM_WKUP + 0x94,
.cm_idlest_dpll = CM_WKUP + 0x34,
.cm_clksel_dpll = CM_WKUP + 0x40,
.cm_div_m2_dpll = CM_WKUP + 0xA0,
};
mach-omap2: add AM335x Display PLL register definition Adds the register definition of the Display DPLL Signed-off-by: Hannes Schmelzer <oe5hpm@oevsv.at> Reviewed-by: Anatolij Gustschin <agust@denx.de>
2018-01-09 18:01:31 +00:00
const struct dpll_regs dpll_disp_regs = {
.cm_clkmode_dpll = CM_WKUP + 0x98,
.cm_idlest_dpll = CM_WKUP + 0x48,
.cm_clksel_dpll = CM_WKUP + 0x54,
.cm_div_m2_dpll = CM_WKUP + 0xA4,
};
am335x:Handle worst case scenario for Errata 1.0.24 In Errata 1.0.24, if the board is running at OPP50 and has a warm reset, the boot ROM sets the frequencies for OPP100. This patch attempts to drop the frequencies back to OPP50 as soon as possible in the SPL. Then later the voltages and frequencies up set higher. Cc: Enric Balletbo i Serra <eballetbo@iseebcn.com> Cc: Lars Poeschel <poeschel@lemonage.de> Signed-off-by: Steve Kipisz <s-kipisz2@ti.com> [trini: Adapt to current framework] Signed-off-by: Tom Rini <trini@ti.com>
2013-08-14 14:51:31 +00:00
struct dpll_params dpll_mpu_opp100 = {
ARM: AM33xx: Cleanup dplls data Locking sequence for all the dplls is same. In the current code same sequence is done repeatedly for each dpll. Instead have a generic function for locking dplls and pass dpll data to that function. This is derived from OMAP4 boards. Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Tested-by: Heiko Schocher <hs@denx.de> Acked-by: Heiko Schocher <hs@denx.de>
2013-07-30 05:18:52 +00:00
CONFIG_SYS_MPUCLK, OSC-1, 1, -1, -1, -1, -1};
am335x:Handle worst case scenario for Errata 1.0.24 In Errata 1.0.24, if the board is running at OPP50 and has a warm reset, the boot ROM sets the frequencies for OPP100. This patch attempts to drop the frequencies back to OPP50 as soon as possible in the SPL. Then later the voltages and frequencies up set higher. Cc: Enric Balletbo i Serra <eballetbo@iseebcn.com> Cc: Lars Poeschel <poeschel@lemonage.de> Signed-off-by: Steve Kipisz <s-kipisz2@ti.com> [trini: Adapt to current framework] Signed-off-by: Tom Rini <trini@ti.com>
2013-08-14 14:51:31 +00:00
const struct dpll_params dpll_core_opp100 = {
ARM: AM33xx: Cleanup dplls data Locking sequence for all the dplls is same. In the current code same sequence is done repeatedly for each dpll. Instead have a generic function for locking dplls and pass dpll data to that function. This is derived from OMAP4 boards. Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Tested-by: Heiko Schocher <hs@denx.de> Acked-by: Heiko Schocher <hs@denx.de>
2013-07-30 05:18:52 +00:00
1000, OSC-1, -1, -1, 10, 8, 4};
arm: am33xx: Add support for mulitiple PLL input frequencies am335x supports various sysclk frequencies which can be determined using sysboot pins. PLLs should be configures based on this sysclk frequency. Add PLL configurations for all supported frequencies. Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2017-05-05 07:29:10 +00:00
const struct dpll_params dpll_mpu_opp[NUM_CRYSTAL_FREQ][NUM_OPPS] = {
{ /* 19.2 MHz */
{125, 3, 2, -1, -1, -1, -1}, /* OPP 50 */
{-1, -1, -1, -1, -1, -1, -1}, /* OPP RESERVED */
{125, 3, 1, -1, -1, -1, -1}, /* OPP 100 */
{150, 3, 1, -1, -1, -1, -1}, /* OPP 120 */
{125, 2, 1, -1, -1, -1, -1}, /* OPP TB */
{625, 11, 1, -1, -1, -1, -1} /* OPP NT */
},
{ /* 24 MHz */
{25, 0, 2, -1, -1, -1, -1}, /* OPP 50 */
{-1, -1, -1, -1, -1, -1, -1}, /* OPP RESERVED */
{25, 0, 1, -1, -1, -1, -1}, /* OPP 100 */
{30, 0, 1, -1, -1, -1, -1}, /* OPP 120 */
arm: omap: fix MPU DPLL divisor for 800MHz clock In locked condition CLKOUT = CLKINP * [M / (N + 1)]. Signed-off-by: Dario Binacchi <dariobin@libero.it> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
2019-12-03 19:55:03 +00:00
{100, 2, 1, -1, -1, -1, -1}, /* OPP TB */
arm: am33xx: Add support for mulitiple PLL input frequencies am335x supports various sysclk frequencies which can be determined using sysboot pins. PLLs should be configures based on this sysclk frequency. Add PLL configurations for all supported frequencies. Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2017-05-05 07:29:10 +00:00
{125, 2, 1, -1, -1, -1, -1} /* OPP NT */
},
{ /* 25 MHz */
{24, 0, 2, -1, -1, -1, -1}, /* OPP 50 */
{-1, -1, -1, -1, -1, -1, -1}, /* OPP RESERVED */
{24, 0, 1, -1, -1, -1, -1}, /* OPP 100 */
{144, 4, 1, -1, -1, -1, -1}, /* OPP 120 */
{32, 0, 1, -1, -1, -1, -1}, /* OPP TB */
{40, 0, 1, -1, -1, -1, -1} /* OPP NT */
},
{ /* 26 MHz */
{300, 12, 2, -1, -1, -1, -1}, /* OPP 50 */
{-1, -1, -1, -1, -1, -1, -1}, /* OPP RESERVED */
{300, 12, 1, -1, -1, -1, -1}, /* OPP 100 */
{360, 12, 1, -1, -1, -1, -1}, /* OPP 120 */
{400, 12, 1, -1, -1, -1, -1}, /* OPP TB */
{500, 12, 1, -1, -1, -1, -1} /* OPP NT */
},
};
const struct dpll_params dpll_core_1000MHz[NUM_CRYSTAL_FREQ] = {
{625, 11, -1, -1, 10, 8, 4}, /* 19.2 MHz */
{125, 2, -1, -1, 10, 8, 4}, /* 24 MHz */
{40, 0, -1, -1, 10, 8, 4}, /* 25 MHz */
{500, 12, -1, -1, 10, 8, 4} /* 26 MHz */
};
const struct dpll_params dpll_per_192MHz[NUM_CRYSTAL_FREQ] = {
{400, 7, 5, -1, -1, -1, -1}, /* 19.2 MHz */
{400, 9, 5, -1, -1, -1, -1}, /* 24 MHz */
{384, 9, 5, -1, -1, -1, -1}, /* 25 MHz */
{480, 12, 5, -1, -1, -1, -1} /* 26 MHz */
};
const struct dpll_params dpll_ddr3_303MHz[NUM_CRYSTAL_FREQ] = {
{505, 15, 2, -1, -1, -1, -1}, /*19.2*/
{101, 3, 2, -1, -1, -1, -1}, /* 24 MHz */
arm: am33xx: Avoid writing into reserved DPLL divider DPLL DRR doesn't have an M4 divider. But the clock driver is trying to configure M4 divider as 4(writing into a reserved register). Fixing it by making M4 divider as -1. Reported-by: Steve Kipisz <s-kipisz2@ti.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
2017-12-28 15:10:01 +00:00
{303, 24, 1, -1, -1, -1, -1}, /* 25 MHz */
{303, 12, 2, -1, -1, -1, -1} /* 26 MHz */
arm: am33xx: Add support for mulitiple PLL input frequencies am335x supports various sysclk frequencies which can be determined using sysboot pins. PLLs should be configures based on this sysclk frequency. Add PLL configurations for all supported frequencies. Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2017-05-05 07:29:10 +00:00
};
const struct dpll_params dpll_ddr3_400MHz[NUM_CRYSTAL_FREQ] = {
{125, 5, 1, -1, -1, -1, -1}, /*19.2*/
{50, 2, 1, -1, -1, -1, -1}, /* 24 MHz */
arm: am33xx: Avoid writing into reserved DPLL divider DPLL DRR doesn't have an M4 divider. But the clock driver is trying to configure M4 divider as 4(writing into a reserved register). Fixing it by making M4 divider as -1. Reported-by: Steve Kipisz <s-kipisz2@ti.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
2017-12-28 15:10:01 +00:00
{16, 0, 1, -1, -1, -1, -1}, /* 25 MHz */
{200, 12, 1, -1, -1, -1, -1} /* 26 MHz */
arm: am33xx: Add support for mulitiple PLL input frequencies am335x supports various sysclk frequencies which can be determined using sysboot pins. PLLs should be configures based on this sysclk frequency. Add PLL configurations for all supported frequencies. Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2017-05-05 07:29:10 +00:00
};
const struct dpll_params dpll_ddr2_266MHz[NUM_CRYSTAL_FREQ] = {
{665, 47, 1, -1, -1, -1, -1}, /*19.2*/
{133, 11, 1, -1, -1, -1, -1}, /* 24 MHz */
arm: am33xx: Avoid writing into reserved DPLL divider DPLL DRR doesn't have an M4 divider. But the clock driver is trying to configure M4 divider as 4(writing into a reserved register). Fixing it by making M4 divider as -1. Reported-by: Steve Kipisz <s-kipisz2@ti.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
2017-12-28 15:10:01 +00:00
{266, 24, 1, -1, -1, -1, -1}, /* 25 MHz */
{133, 12, 1, -1, -1, -1, -1} /* 26 MHz */
arm: am33xx: Add support for mulitiple PLL input frequencies am335x supports various sysclk frequencies which can be determined using sysboot pins. PLLs should be configures based on this sysclk frequency. Add PLL configurations for all supported frequencies. Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2017-05-05 07:29:10 +00:00
};
__weak const struct dpll_params *get_dpll_mpu_params(void)
ARM: AM43xx: clocks: Update DPLL details Updating the Multiplier and Dividers value for all DPLLs. Safest OPP is read from DEV ATTRIBUTE register. Accoring to the value returned the MPU DPLL is locked. At different OPPs follwoing are the MPU locked frequencies. OPP50 300MHz OPP100 600MHz OPP120 720MHz OPPTB 800MHz OPPNT 1000MHz According to the latest DM following is the OPP table dependencies: VDD_CORE VDD_MPU OPP50 OPP50 OPP50 OPP100 OPP100 OPP50 OPP100 OPP100 OPP100 OPP120 So at different OPPs of MPU it is safest to lock CORE at OPP_NOM. Following are the DPLL locking frequencies at OPP NOM: Core locks at 1000MHz Per locks at 960MHz LPDDR2 locks at 266MHz DDR3 locks at 400MHz Touching AM33xx files also to get DPLL values specific to board but no functionality difference. Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
2013-12-10 09:32:20 +00:00
{
arm: am33xx: Add support for mulitiple PLL input frequencies am335x supports various sysclk frequencies which can be determined using sysboot pins. PLLs should be configures based on this sysclk frequency. Add PLL configurations for all supported frequencies. Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2017-05-05 07:29:10 +00:00
return &dpll_mpu_opp100;
ARM: AM43xx: clocks: Update DPLL details Updating the Multiplier and Dividers value for all DPLLs. Safest OPP is read from DEV ATTRIBUTE register. Accoring to the value returned the MPU DPLL is locked. At different OPPs follwoing are the MPU locked frequencies. OPP50 300MHz OPP100 600MHz OPP120 720MHz OPPTB 800MHz OPPNT 1000MHz According to the latest DM following is the OPP table dependencies: VDD_CORE VDD_MPU OPP50 OPP50 OPP50 OPP100 OPP100 OPP50 OPP100 OPP100 OPP100 OPP120 So at different OPPs of MPU it is safest to lock CORE at OPP_NOM. Following are the DPLL locking frequencies at OPP NOM: Core locks at 1000MHz Per locks at 960MHz LPDDR2 locks at 266MHz DDR3 locks at 400MHz Touching AM33xx files also to get DPLL values specific to board but no functionality difference. Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
2013-12-10 09:32:20 +00:00
}
const struct dpll_params *get_dpll_core_params(void)
{
arm: am33xx: Add support for mulitiple PLL input frequencies am335x supports various sysclk frequencies which can be determined using sysboot pins. PLLs should be configures based on this sysclk frequency. Add PLL configurations for all supported frequencies. Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2017-05-05 07:29:10 +00:00
int ind = get_sys_clk_index();
return &dpll_core_1000MHz[ind];
ARM: AM43xx: clocks: Update DPLL details Updating the Multiplier and Dividers value for all DPLLs. Safest OPP is read from DEV ATTRIBUTE register. Accoring to the value returned the MPU DPLL is locked. At different OPPs follwoing are the MPU locked frequencies. OPP50 300MHz OPP100 600MHz OPP120 720MHz OPPTB 800MHz OPPNT 1000MHz According to the latest DM following is the OPP table dependencies: VDD_CORE VDD_MPU OPP50 OPP50 OPP50 OPP100 OPP100 OPP50 OPP100 OPP100 OPP100 OPP120 So at different OPPs of MPU it is safest to lock CORE at OPP_NOM. Following are the DPLL locking frequencies at OPP NOM: Core locks at 1000MHz Per locks at 960MHz LPDDR2 locks at 266MHz DDR3 locks at 400MHz Touching AM33xx files also to get DPLL values specific to board but no functionality difference. Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
2013-12-10 09:32:20 +00:00
}
const struct dpll_params *get_dpll_per_params(void)
{
arm: am33xx: Add support for mulitiple PLL input frequencies am335x supports various sysclk frequencies which can be determined using sysboot pins. PLLs should be configures based on this sysclk frequency. Add PLL configurations for all supported frequencies. Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2017-05-05 07:29:10 +00:00
int ind = get_sys_clk_index();
return &dpll_per_192MHz[ind];
ARM: AM43xx: clocks: Update DPLL details Updating the Multiplier and Dividers value for all DPLLs. Safest OPP is read from DEV ATTRIBUTE register. Accoring to the value returned the MPU DPLL is locked. At different OPPs follwoing are the MPU locked frequencies. OPP50 300MHz OPP100 600MHz OPP120 720MHz OPPTB 800MHz OPPNT 1000MHz According to the latest DM following is the OPP table dependencies: VDD_CORE VDD_MPU OPP50 OPP50 OPP50 OPP100 OPP100 OPP50 OPP100 OPP100 OPP100 OPP120 So at different OPPs of MPU it is safest to lock CORE at OPP_NOM. Following are the DPLL locking frequencies at OPP NOM: Core locks at 1000MHz Per locks at 960MHz LPDDR2 locks at 266MHz DDR3 locks at 400MHz Touching AM33xx files also to get DPLL values specific to board but no functionality difference. Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
2013-12-10 09:32:20 +00:00
}
ARM: AM33xx: Cleanup clocks layer Cleaning up the clocks layer. This helps in addition of new Soc with minimal changes. This is derived from OMAP4 boards. Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Tested-by: Heiko Schocher <hs@denx.de> Acked-by: Heiko Schocher <hs@denx.de>
2013-07-30 05:18:53 +00:00
void setup_clocks_for_console(void)
ARM:AM33XX: Add clock definitions This patch adds basic clock definition of am33xx SoC. Signed-off-by: Chandan Nath <chandan.nath@ti.com> Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2011-10-14 02:58:23 +00:00
{
ARM: AM33xx: Cleanup clocks layer Cleaning up the clocks layer. This helps in addition of new Soc with minimal changes. This is derived from OMAP4 boards. Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Tested-by: Heiko Schocher <hs@denx.de> Acked-by: Heiko Schocher <hs@denx.de>
2013-07-30 05:18:53 +00:00
clrsetbits_le32(&cmwkup->wkclkstctrl, CD_CLKCTRL_CLKTRCTRL_MASK,
CD_CLKCTRL_CLKTRCTRL_SW_WKUP <<
CD_CLKCTRL_CLKTRCTRL_SHIFT);
clrsetbits_le32(&cmper->l4hsclkstctrl, CD_CLKCTRL_CLKTRCTRL_MASK,
CD_CLKCTRL_CLKTRCTRL_SW_WKUP <<
CD_CLKCTRL_CLKTRCTRL_SHIFT);
clrsetbits_le32(&cmwkup->wkup_uart0ctrl,
MODULE_CLKCTRL_MODULEMODE_MASK,
MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
MODULE_CLKCTRL_MODULEMODE_SHIFT);
clrsetbits_le32(&cmper->uart1clkctrl,
MODULE_CLKCTRL_MODULEMODE_MASK,
MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
MODULE_CLKCTRL_MODULEMODE_SHIFT);
clrsetbits_le32(&cmper->uart2clkctrl,
MODULE_CLKCTRL_MODULEMODE_MASK,
MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
MODULE_CLKCTRL_MODULEMODE_SHIFT);
clrsetbits_le32(&cmper->uart3clkctrl,
MODULE_CLKCTRL_MODULEMODE_MASK,
MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
MODULE_CLKCTRL_MODULEMODE_SHIFT);
clrsetbits_le32(&cmper->uart4clkctrl,
MODULE_CLKCTRL_MODULEMODE_MASK,
MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
MODULE_CLKCTRL_MODULEMODE_SHIFT);
clrsetbits_le32(&cmper->uart5clkctrl,
MODULE_CLKCTRL_MODULEMODE_MASK,
MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
MODULE_CLKCTRL_MODULEMODE_SHIFT);
ARM:AM33XX: Add clock definitions This patch adds basic clock definition of am33xx SoC. Signed-off-by: Chandan Nath <chandan.nath@ti.com> Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2011-10-14 02:58:23 +00:00
}
ARM: AM33xx: Cleanup clocks layer Cleaning up the clocks layer. This helps in addition of new Soc with minimal changes. This is derived from OMAP4 boards. Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Tested-by: Heiko Schocher <hs@denx.de> Acked-by: Heiko Schocher <hs@denx.de>
2013-07-30 05:18:53 +00:00
void enable_basic_clocks(void)
ARM:AM33XX: Add clock definitions This patch adds basic clock definition of am33xx SoC. Signed-off-by: Chandan Nath <chandan.nath@ti.com> Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2011-10-14 02:58:23 +00:00
{
ARM: AM33xx: Cleanup clocks layer Cleaning up the clocks layer. This helps in addition of new Soc with minimal changes. This is derived from OMAP4 boards. Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Tested-by: Heiko Schocher <hs@denx.de> Acked-by: Heiko Schocher <hs@denx.de>
2013-07-30 05:18:53 +00:00
u32 *const clk_domains[] = {
&cmper->l3clkstctrl,
&cmper->l4fwclkstctrl,
&cmper->l3sclkstctrl,
&cmper->l4lsclkstctrl,
&cmwkup->wkclkstctrl,
&cmper->emiffwclkctrl,
&cmrtc->clkstctrl,
0
};
u32 *const clk_modules_explicit_en[] = {
&cmper->l3clkctrl,
&cmper->l4lsclkctrl,
&cmper->l4fwclkctrl,
&cmwkup->wkl4wkclkctrl,
&cmper->l3instrclkctrl,
&cmper->l4hsclkctrl,
&cmwkup->wkgpio0clkctrl,
&cmwkup->wkctrlclkctrl,
&cmper->timer2clkctrl,
&cmper->gpmcclkctrl,
&cmper->elmclkctrl,
&cmper->mmc0clkctrl,
&cmper->mmc1clkctrl,
&cmwkup->wkup_i2c0ctrl,
&cmper->gpio1clkctrl,
&cmper->gpio2clkctrl,
&cmper->gpio3clkctrl,
&cmper->i2c1clkctrl,
arm: am335x: add support for i2c2 bus The am335x from BeagleBone use i2c EEPROM to detect capes. The memory is wired to i2c bus 2 therefore it need to be enabled. Add i2c2 clock, pinmux description and pinmux enable function. Signed-off-by: Kory Maincent <kory.maincent@bootlin.com>
2021-05-04 17:31:29 +00:00
&cmper->i2c2clkctrl,
ARM: AM33xx: Cleanup clocks layer Cleaning up the clocks layer. This helps in addition of new Soc with minimal changes. This is derived from OMAP4 boards. Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Tested-by: Heiko Schocher <hs@denx.de> Acked-by: Heiko Schocher <hs@denx.de>
2013-07-30 05:18:53 +00:00
&cmper->cpgmac0clkctrl,
&cmper->spi0clkctrl,
&cmrtc->rtcclkctrl,
&cmper->usb0clkctrl,
&cmper->emiffwclkctrl,
&cmper->emifclkctrl,
0
};
do_enable_clocks(clk_domains, clk_modules_explicit_en, 1);
ARM:AM33XX: Add clock definitions This patch adds basic clock definition of am33xx SoC. Signed-off-by: Chandan Nath <chandan.nath@ti.com> Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2011-10-14 02:58:23 +00:00
ARM:AM33XX: Fix ddr and timer register offset This patch is added to update incorrect ddr and timer register offset. Signed-off-by: Chandan Nath <chandan.nath@ti.com> Signed-off-by: Tom Rini <trini@ti.com>
2012-01-09 20:38:56 +00:00
/* Select the Master osc 24 MHZ as Timer2 clock source */
writel(0x1, &cmdpll->clktimer2clk);
ARM:AM33XX: Add clock definitions This patch adds basic clock definition of am33xx SoC. Signed-off-by: Chandan Nath <chandan.nath@ti.com> Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2011-10-14 02:58:23 +00:00
}
arm, am335x: Enable Spread Spectrum for the MPU Enable Spread Spectrum for the MPU by calculating the required values and setting the registers accordingly. Signed-off-by: Heiko Schocher <hs@denx.de> Reviewed-by: Tom Rini <trini@konsulko.com>
2016-06-07 06:31:19 +00:00
/*
* Enable Spread Spectrum for the MPU by calculating the required
* values and setting the registers accordingly.
* @param permille The spreading in permille (10th of a percent)
*/
void set_mpu_spreadspectrum(int permille)
{
u32 multiplier_m;
u32 predivider_n;
u32 cm_clksel_dpll_mpu;
u32 cm_clkmode_dpll_mpu;
u32 ref_clock;
u32 pll_bandwidth;
u32 mod_freq_divider;
u32 exponent;
u32 mantissa;
u32 delta_m_step;
printf("Enabling Spread Spectrum of %d permille for MPU\n",
permille);
/* Read PLL parameter m and n */
cm_clksel_dpll_mpu = readl(&cmwkup->clkseldpllmpu);
multiplier_m = (cm_clksel_dpll_mpu >> 8) & 0x3FF;
predivider_n = cm_clksel_dpll_mpu & 0x7F;
/*
* Calculate reference clock (clock after pre-divider),
* its max. PLL bandwidth,
* and resulting mod_freq_divider
*/
ref_clock = V_OSCK / (predivider_n + 1);
pll_bandwidth = ref_clock / 70;
mod_freq_divider = ref_clock / (4 * pll_bandwidth);
/* Calculate Mantissa/Exponent */
exponent = 0;
mantissa = mod_freq_divider;
while ((mantissa > 127) && (exponent < 7)) {
exponent++;
mantissa /= 2;
}
if (mantissa > 127)
mantissa = 127;
mod_freq_divider = mantissa << exponent;
/*
* Calculate Modulation steps
* As we use Downspread only, the spread is twice the value of
* permille, so Div2!
* As it takes the value in percent, divide by ten!
*/
delta_m_step = ((u32)((multiplier_m * permille) / 10 / 2)) << 18;
delta_m_step /= 100;
delta_m_step /= mod_freq_divider;
if (delta_m_step > 0xFFFFF)
delta_m_step = 0xFFFFF;
/* Setup Spread Spectrum */
writel(delta_m_step, &cmwkup->sscdeltamstepdllmpu);
writel((exponent << 8) | mantissa, &cmwkup->sscmodfreqdivdpllmpu);
cm_clkmode_dpll_mpu = readl(&cmwkup->clkmoddpllmpu);
/* clear all SSC flags */
cm_clkmode_dpll_mpu &= ~(0xF << CM_CLKMODE_DPLL_SSC_EN_SHIFT);
/* enable SSC with Downspread only */
cm_clkmode_dpll_mpu |= CM_CLKMODE_DPLL_SSC_EN_MASK |
CM_CLKMODE_DPLL_SSC_DOWNSPREAD_MASK;
writel(cm_clkmode_dpll_mpu, &cmwkup->clkmoddpllmpu);
while (!(readl(&cmwkup->clkmoddpllmpu) & 0x2000))
;
}
Reference in a new issue Copy permalink