Hi Stefano,
On 23.04.2012 11:55, Stefano Babic wrote:
On 13/04/2012 10:00, Dirk Behme wrote:
Init the core regulator voltage to 1.2V. This is required for the correct
functioning of the GPU and when the ARM LDO is set to 1.225V. This is a
workaround to fix some memory clock jitter.
Note: This should be but can't be done in the DCD. The bootloader
prevents access to the ANATOP registers.
Signed-off-by: Dirk Behme <dirk.be...@de.bosch.com>
CC: Jason Chen <b02...@freescale.com>
CC: Jason Liu <r64...@freescale.com>
CC: Ranjani Vaidyanathan <ra5...@freescale.com>
CC: Stefano Babic <sba...@denx.de>
CC: Fabio Estevam <feste...@gmail.com>
---
Hi Dirk,
+static void init_anatop_reg(void)
+{
+ struct anatop_regs *anatop = (struct anatop_regs *)ANATOP_BASE_ADDR;
+ int reg = readl(&anatop->reg_core);
+
+ /*
+ * Increase the VDDSOC to 1.2V
+ * Mask out the REG_CORE[22:18] bits (REG2_TRIG)
+ * and set them to 1.2V (0.7V + 0x14 * 0.025V)
+ */
+ reg = (reg & ~(0x1F << 18)) | (0x14 << 18);
Everything clear, but what do you mind to add an accessor to set this
voltage ? It is straightforward, and more boards could use it.
Sorry, but what do you mean with "add an accessor"? Could you give an
example?
Best regards
Dirk
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